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Entanglement spreading and emergent locality in Brownian SYK chains 布朗SYK链的纠缠扩展和涌现局部性
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-07 DOI: 10.1007/JHEP05(2026)058
Jatin Narde, Onkar Parrikar, Harshit Rajgadia, Sandip Trivedi
{"title":"Entanglement spreading and emergent locality in Brownian SYK chains","authors":"Jatin Narde,&nbsp;Onkar Parrikar,&nbsp;Harshit Rajgadia,&nbsp;Sandip Trivedi","doi":"10.1007/JHEP05(2026)058","DOIUrl":"10.1007/JHEP05(2026)058","url":null,"abstract":"<p>The Ryu-Takayanagi (RT) formula and its interpretation in terms of quantum error correction (QEC) implies an emergent locality for the spread of quantum information in holographic CFTs, where information injected at a point in the boundary theory spreads within a sharp light-cone corresponding to the butterfly velocity. This emergent locality is a necessary condition for the existence of a geometric bulk dual with an RT-like formula for entanglement entropy. In this paper, we use tools from QEC to study the spread of quantum information and the emergence of a sharp light-cone in an analytically tractable model of chaotic dynamics, namely a one-dimensional Brownian SYK chain. We start with an infinite temperature state in this model and inject a qudit at time <i>t</i> = 0 at some point <i>p</i> on the chain. We then explicitly calculate the amount of information of the qudit contained in an interval of length 2<i>ℓ</i> (centered around <i>p</i>) at some later time <i>t</i> = <i>T</i>. We find that at strong coupling, this quantity shows a sharp transition as a function of <i>ℓ</i> from near zero to near maximal correlation. The transition occurs at <i>ℓ</i> ~ <i>v</i><sub><i>B</i></sub><i>T</i>, with <i>v</i><sub><i>B</i></sub> being the butterfly velocity. Underlying the emergence of this sharp light-cone is a non-linear generalization of the diffusion equation called the FKPP equation, which admits sharp domain wall solutions at late times and strong coupling. These domain wall solutions can be understood on physical grounds from properties of operator growth in chaotic systems.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)058.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gradient RG flow in scalar-fermion QFTs 标量费米子qft中的梯度RG流
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-07 DOI: 10.1007/JHEP05(2026)064
William H. Pannell, William P. Ronayne, Andreas Stergiou
{"title":"Gradient RG flow in scalar-fermion QFTs","authors":"William H. Pannell,&nbsp;William P. Ronayne,&nbsp;Andreas Stergiou","doi":"10.1007/JHEP05(2026)064","DOIUrl":"10.1007/JHEP05(2026)064","url":null,"abstract":"<p>The gradient property of the renormalisation group (RG) is examined to four-loop order in scalar-fermion systems in <i>d</i> = 4 and <i>d</i> = 4 − <i>ε</i> dimensions. The crucial role played by the beta shift, which is a modification of the standard dim-reg beta function, is elucidated, and specific conditions that it needs to satisfy for the RG flow to be gradient are derived. Over a thousand gradient-flow conditions are found, all of which are scheme-independent and satisfied whenever the full set of results needed to check them is available. It is shown, in the framework of the <i>ε</i> = 4 − <i>d</i> expansion, that the space of conformal field theories (CFTs) is dominated by those with non-zero beta shift as the number of fields grows. Physical properties of CFTs obtained as solutions where the beta functions are not zero in the <i>ε</i> expansion are discussed.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)064.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Toward Krylov-based holography in double-scaled SYK 双尺度SYK中基于krylovs的全息技术
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-07 DOI: 10.1007/JHEP05(2026)056
Yichao Fu, Hyun-Sik Jeong, Keun-Young Kim, Juan F. Pedraza
{"title":"Toward Krylov-based holography in double-scaled SYK","authors":"Yichao Fu,&nbsp;Hyun-Sik Jeong,&nbsp;Keun-Young Kim,&nbsp;Juan F. Pedraza","doi":"10.1007/JHEP05(2026)056","DOIUrl":"10.1007/JHEP05(2026)056","url":null,"abstract":"<p>Building on the duality between Krylov complexity and geodesic length in Jackiw-Teitelboim and sine-dilaton gravity, we develop a precise holographic dictionary for quantities in the Krylov subspace of the double-scaled Sachdev-Ye-Kitaev model (DSSYK). First, we demonstrate that the growth rate of Krylov state complexity corresponds to the wormhole velocity, and show that its expectation value in coherent states serves as a boundary diagnostic of firewall-like structures via bulk reconstruction. We also delineate an alternative bulk description in terms of the proper momentum of an infalling particle at early times, establishing a threefold duality between the Krylov complexity growth rate, wormhole velocity, and proper momentum, with clear regimes of validity. Beyond the first moments, we argue that higher-order Krylov complexities capture connected bulk contributions encoded by replica wormholes, while the logarithmic variant probes the replica saddle structure. Finally, within a third-quantized setting incorporating baby universes, we show that the Krylov entropy equals the von Neumann entropy of the parent-geometry density matrix obtained after tracing out baby universes, thereby quantifying information flow into the baby universe sector. Together, these results elevate Krylov-space observables to sharp probes of bulk dynamics and topology in ensemble-averaged 2D gravity.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)056.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Holographic entanglement entropy in quiver theories 颤振理论中的全息纠缠熵
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-07 DOI: 10.1007/JHEP05(2026)062
Dimitrios Chatzis, Ali Fatemiabhari, Mauro Giliberti, Madison Hammond
{"title":"Holographic entanglement entropy in quiver theories","authors":"Dimitrios Chatzis,&nbsp;Ali Fatemiabhari,&nbsp;Mauro Giliberti,&nbsp;Madison Hammond","doi":"10.1007/JHEP05(2026)062","DOIUrl":"10.1007/JHEP05(2026)062","url":null,"abstract":"<p>This work presents a study of the entanglement entropy (EE) in a class of four-dimensional <span>( mathcal{N} )</span> = 1 linear quiver SCFTs deformed by the presence of a VEV. We review the holographic backgrounds dual to these theories, and calculate the EE for different Ryu-Takayanagi embeddings. We allow the embeddings to explore, in addition to the usual spatial direction, the internal coordinate <i>z</i>, associated with the quiver degrees of freedom. Via the numerical optimization of splines on triangulations, we find the minimal configuration and the value of the EE for the different embeddings and quiver parameters. Our results agree with previous studies showcasing phase transitions in the EE. We also provide novel results illuminating the dependence of the EE on the fundamental and gauge degrees of freedom, signaling partial deconfinement, which are worthy of further study.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)062.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quark mixing from muon collider neutrinos 介子对撞机中微子的夸克混合
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-07 DOI: 10.1007/JHEP05(2026)069
David Marzocca, Francesco Montagno, Manuel Morales-Alvarado, Andrea Wulzer
{"title":"Quark mixing from muon collider neutrinos","authors":"David Marzocca,&nbsp;Francesco Montagno,&nbsp;Manuel Morales-Alvarado,&nbsp;Andrea Wulzer","doi":"10.1007/JHEP05(2026)069","DOIUrl":"10.1007/JHEP05(2026)069","url":null,"abstract":"<p>A high energy muon collider naturally produces a collimated beam of neutrinos for a fixed-target experiment at a dedicated far-forward facility. The high intensity and energy of the beam makes it ideally suited for astonishingly precise measurements of neutrino scattering on nucleons in the deeply inelastic regime, enabling the determination of the Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix. We assess the floor to the attainable sensitivity set by irreducible sources of uncertainties from the imperfect knowledge of the parton distribution (PDF) and fragmentation functions, showing that a strong improvement is possible well above current standards. As a by-product, our analysis also outlines extraordinary perspectives for a combined determination of the PDF. The results demonstrate the potential of a parasitic neutrino experiment at the muon collider, motivating detailed future studies.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)069.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The spectrum of Feynman-integral geometries at two loops 两个环上的费曼积分几何谱
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-07 DOI: 10.1007/JHEP05(2026)057
Piotr Bargieła, Hjalte Frellesvig, Robin Marzucca, Roger Morales, Florian Seefeld, Matthias Wilhelm, Tong-Zhi Yang
{"title":"The spectrum of Feynman-integral geometries at two loops","authors":"Piotr Bargieła,&nbsp;Hjalte Frellesvig,&nbsp;Robin Marzucca,&nbsp;Roger Morales,&nbsp;Florian Seefeld,&nbsp;Matthias Wilhelm,&nbsp;Tong-Zhi Yang","doi":"10.1007/JHEP05(2026)057","DOIUrl":"10.1007/JHEP05(2026)057","url":null,"abstract":"<p>We provide a complete classification of the Feynman-integral geometries at two-loop order in four-dimensional Quantum Field Theory with standard quadratic propagators. Concretely, we consider a finite basis of integrals in the ’t Hooft-Veltman scheme, i.e. with <i>D</i>-dimensional loop momenta and four-dimensional external momenta, which belong to 79 independent topologies, or sectors. Then, we analyze the leading singularities of the integrals in those sectors for generic values of the masses and momenta, using the loop-by-loop Baikov representation. Aside from the Riemann sphere, we find that elliptic curves, hyperelliptic curves of genus 2 and 3 as well as K3 surfaces occur. Moreover, we find a smooth and non-degenerate Del Pezzo surface of degree 2, a particular Fano variety known to be rationalizable, resulting in a curve of geometric genus 3. These geometries determine the space of functions relevant for Quantum Field Theories at two-loop order, including in the Standard Model.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)057.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the phase of the de Sitter density of states 关于态的德西特密度的相
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-07 DOI: 10.1007/JHEP05(2026)068
Yiming Chen, Douglas Stanford, Haifeng Tang, Zhenbin Yang
{"title":"On the phase of the de Sitter density of states","authors":"Yiming Chen,&nbsp;Douglas Stanford,&nbsp;Haifeng Tang,&nbsp;Zhenbin Yang","doi":"10.1007/JHEP05(2026)068","DOIUrl":"10.1007/JHEP05(2026)068","url":null,"abstract":"<p>The one-loop gravitational path integral around Euclidean de Sitter space <i>S</i><sup><i>D</i></sup> has a complex phase that casts doubt on a state counting interpretation. Recently, it was proposed to cancel this phase by including an observer. We explore this proposal in the case where the observer is a charged black hole in equilibrium with the de Sitter horizon. We compute the phase of the one-loop determinant within a two-dimensional dilaton gravity reduction, using both numerical and analytical methods. Our results interpolate between previous studies of a probe geodesic observer and the Nariai solution. We also revisit the prescription for going from the Euclidean path integral to the state-counting partition function, finding a positive sign in the final density of states.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)068.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of chaos and scrambling in hairy AdS soliton 毛状AdS孤子的混沌与乱斗研究
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-06 DOI: 10.1007/JHEP05(2026)049
Adrita Chakraborty, Balbeer Singh
{"title":"Study of chaos and scrambling in hairy AdS soliton","authors":"Adrita Chakraborty,&nbsp;Balbeer Singh","doi":"10.1007/JHEP05(2026)049","DOIUrl":"10.1007/JHEP05(2026)049","url":null,"abstract":"<p>In this work, we perform a comprehensive study of the classical and quantum chaos in a candidate five-dimensional hairy AdS soliton. It is a horizonless geometry holographically dual to a confining field theory with finite scalar potential. We probe classical chaos by using particle geodesics and closed classical string. While the former shows no signature of chaos, the latter provides chaotic dynamics of the string using the Lyapunov exponent and the evolution of the Poincaré section. We perform an independent spectral analysis using the tools of the random matrix theory (RMT), namely the level space distributions and the Dyson-Mehta(DM) ∆<sub>3</sub>-statistics. We observe a clear transition from the low energy Wigner-Gaussian Orthogonal Ensemble (GOE) distribution to the high energy Poisson distribution. This signifies a flow from quantum chaos in the infrared to integrability in the ultraviolet. We quantitatively characterize the inherent quantum scrambling in the dual theory by computing the butterfly velocity, the rate of spatial spread of the information scrambling, inside the bulk. We undergo the entanglement wedge reconstruction method, in which we heuristically consider the region near the soliton tip to provide the infrared physics of scrambling in analogy with the near-horizon region of a black hole. We find that the hair parameter controls various scrambling properties. Finally, we make comments on the interplay between the insulator/superconductor phase transition in hairy soliton geometry and the dynamical transition from integrability to chaos, as both of these are affected by the presence of the hair parameter.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)049.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Searching for neutrino polarizability at DUNE 在DUNE上寻找中微子的极化率
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-06 DOI: 10.1007/JHEP05(2026)047
Sam Carey, Pedro Machado, Gil Paz, Alexey A. Petrov, Alexandre Sousa, Michele Tammaro, Jure Zupan
{"title":"Searching for neutrino polarizability at DUNE","authors":"Sam Carey,&nbsp;Pedro Machado,&nbsp;Gil Paz,&nbsp;Alexey A. Petrov,&nbsp;Alexandre Sousa,&nbsp;Michele Tammaro,&nbsp;Jure Zupan","doi":"10.1007/JHEP05(2026)047","DOIUrl":"10.1007/JHEP05(2026)047","url":null,"abstract":"<p>We perform an initial study of DUNE’s sensitivity to enhanced neutrino polarizability within models of light scalar mediators. We identify two possible signatures of polarizability due to neutrino scattering on electrons and due to coherent scattering on argon nuclei. These result in either one or two separated electromagnetic showers, respectively, with no associated hadronic activity. For each signature we compute the signal rates and the relevant backgrounds, obtaining the projected reach of the DUNE near detector. We then compare this with the current astrophysical and terrestrial bounds on light scalar models coupling to neutrinos and/or photons.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)047.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
20′ five-point function of ( mathcal{N}=4 ) SYM and stringy corrections 20′五点函数( mathcal{N}=4 ) SYM和弦修正
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-06 DOI: 10.1007/JHEP05(2026)045
Joao Vilas Boas
{"title":"20′ five-point function of ( mathcal{N}=4 ) SYM and stringy corrections","authors":"Joao Vilas Boas","doi":"10.1007/JHEP05(2026)045","DOIUrl":"10.1007/JHEP05(2026)045","url":null,"abstract":"<p>We set up a bootstrap approach to compute the first stringy correction to the supergravity regime of the correlation function of five 20’ operators in <span>( mathcal{N}=4 )</span> super Yang-Mills. We use factorization of Mellin amplitudes, supersymmetric constraints and protected observables to refine our ansatz, leaving only a single undetermined coefficient. We identify non-protected CFT data that is sensitive to the residual ambiguity of our ansatz, and we verify the compatibility of our result with the anticipated behaviour of the Mellin amplitude in the flat-space limit. As a byproduct of our analysis, we also compute the first stringy correction to the four-point correlators of three 20’ operators and either one R-symmetry current or one stress tensor.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)045.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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