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Resurrecting the coherent state variational algorithm for large N gauge theories 大N规范理论的相干态变分算法的复活
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-08 DOI: 10.1007/JHEP05(2026)091
Laurence G. Yaffe
{"title":"Resurrecting the coherent state variational algorithm for large N gauge theories","authors":"Laurence G. Yaffe","doi":"10.1007/JHEP05(2026)091","DOIUrl":"10.1007/JHEP05(2026)091","url":null,"abstract":"<p>The feasibility of studying, numerically, properties of infinite volume QCD-like theories in the large <i>N</i> limit using coherent state variational methods is reassessed. An entirely new implementation of this approach is described, applicable to SU(<i>N</i>) lattice gauge theories, with or without fundamental representation fermions, on cubic lattices of up to four dimensions. In addition to various test cases, initial results are presented for Hamiltonian Yang-Mills theory on an infinite two-dimensional spatial lattice.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)091.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830108","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
Quadratic curvature correction to 5D Myers-Perry metric 二次曲率修正为5D迈尔斯-佩里度规
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-08 DOI: 10.1007/JHEP05(2026)081
Liang Ma, H. Lü
{"title":"Quadratic curvature correction to 5D Myers-Perry metric","authors":"Liang Ma,&nbsp;H. Lü","doi":"10.1007/JHEP05(2026)081","DOIUrl":"10.1007/JHEP05(2026)081","url":null,"abstract":"<p>We consider quadratic curvature perturbation to the Myers-Perry black hole in five dimensions at the linear level in the coupling constant. The solution can then be solved order by order in terms of two dimensionless angular momentum parameters up to an arbitrary order. We present the results up to tenth order. The perturbed solution allows us to obtain the higher-derivative correction to the black hole thermodynamics, which we find is in complete agreement with the Reall-Santos method.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)081.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829726","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
Interface correlators in symmetric product orbifolds 对称乘积轨道中的界面相关器
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-08 DOI: 10.1007/JHEP05(2026)085
Sebastian Harris, Volker Schomerus, Takashi Tsuda
{"title":"Interface correlators in symmetric product orbifolds","authors":"Sebastian Harris,&nbsp;Volker Schomerus,&nbsp;Takashi Tsuda","doi":"10.1007/JHEP05(2026)085","DOIUrl":"10.1007/JHEP05(2026)085","url":null,"abstract":"<p>Symmetric product orbifolds provide a controlled environment to explore generic features of gauge theory and holography. The tractability of these theories lies in the complete characterisation of their gauge structure through holomorphic covering maps. In this paper, we introduce a novel class of generalised covering maps, which define a universal family of interfaces between symmetric product orbifolds. These interfaces coincide with the holographic interfaces that were recently proposed as duals to AdS<sub>2</sub> branes in pure NSNS AdS<sub>3</sub> backgrounds. The new covering-map description enables efficient evaluation of interface correlators via a generalisation of the Lunin-Mathur method. To organise these computations, we derive a generalised Riemann-Hurwitz formula for interface coverings and introduce novel diagrammatic rules that systematically classify these maps. The new framework allows us to define a concrete grand-canonical ensemble that has the correct properties to compute correlation functions dual to open string scattering amplitudes. Using the generalised Riemann-Hurwitz formula, we explicitly show that the correlators of the ensemble structurally match string perturbation theory to all orders in the string coupling.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)085.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829783","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
Nonlinear relativistic tidal response of neutron stars 中子星的非线性相对论潮汐响应
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-08 DOI: 10.1007/JHEP05(2026)074
Paolo Pani, Massimiliano Maria Riva, Luca Santoni, Nikola Savić, Filippo Vernizzi
{"title":"Nonlinear relativistic tidal response of neutron stars","authors":"Paolo Pani,&nbsp;Massimiliano Maria Riva,&nbsp;Luca Santoni,&nbsp;Nikola Savić,&nbsp;Filippo Vernizzi","doi":"10.1007/JHEP05(2026)074","DOIUrl":"10.1007/JHEP05(2026)074","url":null,"abstract":"<p>We investigate the nonlinear tidal response of relativistic neutron stars by computing the fully relativistic, static, quadratic Love numbers. Using both the worldline effective field theory for extended gravitating bodies and second-order perturbations of relativistic stellar models, we derive the nonlinear tidal deformation induced by an external gravito-electric tidal field to quadratic order. Through a suitable matching procedure, we provide for the first time the leading nonlinear tidal corrections to the conservative dynamics and gravitational-wave signal of binary systems. Quadratic Love numbers are enhanced more than the linear ones in the small-compactness limit. Because of this, despite entering the gravitational-wave phase at 8th post-Newtonian (PN) order, the leading quadratic Love number can be as important as the next-to-next-to-leading order linear tidal correction, which enters at 7th PN order, and is larger than the subleading point-particle contribution entering at 4th PN order. In particular, quadratic Love numbers can be as large as ~ 10% of the linear Love numbers in the late inspiral phase. Our approach provides a framework to also compute the (subleading) nonlinear effects induced by magnetic tidal fields and higher multipole moments, and sets the foundations for incorporating nonlinear tidal effects in high-precision gravitational-wave modeling.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)074.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830056","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
Quiver Yangians as Coulomb branch algebras 作为库仑分支代数的颤阳代数
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-08 DOI: 10.1007/JHEP05(2026)083
Tiantai Chen, Wei Li
{"title":"Quiver Yangians as Coulomb branch algebras","authors":"Tiantai Chen,&nbsp;Wei Li","doi":"10.1007/JHEP05(2026)083","DOIUrl":"10.1007/JHEP05(2026)083","url":null,"abstract":"<p>For a 3D <span>( mathcal{N} )</span> = 4 gauge theory, turning on the Ω-background in <span>( mathbb{R}times {mathbb{R}}_{epsilon}^2 )</span> deforms the Coulomb branch chiral ring into the quantum Coulomb branch algebra, generated by the <span>( frac{1}{2} )</span>-BPS monopoles together with the complex scalar in the vector-multiplet. We conjecture that for a 3D <span>( mathcal{N} )</span> = 4 quiver gauge theory with unitary gauge group, the quantum Coulomb branch algebra can be formulated as the truncated shifted quiver Yangian Y(<span>( hat{Q} )</span>, <span>( hat{W} )</span>) based on the triple quiver <span>( hat{Q} )</span> of the original quiver Q with canonical potential <span>( hat{W} )</span>. We check this conjecture explicitly for general tree-type quivers Q by considering the action of monopoles on the <span>( frac{1}{2} )</span>-BPS vortex configurations. The Hilbert spaces of vortices approaching different vacua at spatial infinity furnish different representations of the shifted quiver Yangian, and all the charge functions have only simple poles. For quivers beyond tree-type, our conjecture is consistent with known results on special examples.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)083.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830109","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
Emergent mixed states for baby universes and black holes 婴儿宇宙和黑洞的涌现混合状态
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-08 DOI: 10.1007/JHEP05(2026)090
Jonah Kudler-Flam, Edward Witten
{"title":"Emergent mixed states for baby universes and black holes","authors":"Jonah Kudler-Flam,&nbsp;Edward Witten","doi":"10.1007/JHEP05(2026)090","DOIUrl":"10.1007/JHEP05(2026)090","url":null,"abstract":"<p>We examine the behavior of sequences of states in the large <i>N</i> limit of AdS/CFT duality in cases in which the bulk duals involve baby universes or black holes. Such sequences generally fail to converge as pure states. Under suitable conditions, such as diverging coarse-grained entropy, they can converge to mixed states for the large <i>N</i> algebra, as in the case of black holes. For Euclidean preparations that produce baby universes, the sequences do not converge, due to wormhole contributions, and so these states cannot admit large <i>N</i> limits. Nevertheless, appropriate averaging over <i>N</i> can lead to convergence to a mixed state. The associated algebras have nontrivial commutants, which can possibly be interpreted as operators in the baby universe.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)090.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829731","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
Exploring the infrared landscape of the SYK model 探索SYK模型的红外景观
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-08 DOI: 10.1007/JHEP05(2026)084
Weam Abou Hamdan, Damián A. Galante
{"title":"Exploring the infrared landscape of the SYK model","authors":"Weam Abou Hamdan,&nbsp;Damián A. Galante","doi":"10.1007/JHEP05(2026)084","DOIUrl":"10.1007/JHEP05(2026)084","url":null,"abstract":"<p>We analyse a class of SYK models whose Hamiltonian is the sum of two SYK Hamiltonians with different numbers of fermions <i>q,</i> <span>( overset{sim }{q} )</span> in each interaction. We consider both Euclidean and Lorentzian probes of the quantum system in the large <i>N</i> limit. In the strong coupling phase, the entropy provides a diagnostic of the thermal renormalisation group flow. Under certain conditions, two parametrically separated regimes of near-conformal behaviour emerge. The first reproduces the standard linear-in-temperature scaling characteristic of the single SYK model. The system then flows to another near-fixed point whose entropy scaling depends on the ratio <span>( n=q/overset{sim }{q} )</span>. For <i>n &lt;</i> 3<i>/</i>2, the entropy exhibits anomalous, stronger-than-linear scaling in temperature. At <i>n</i> = 3<i>/</i>2, there is an additional logarithmic enhancement. Using conformal perturbation theory, we argue that in the infrared regime of the SYK model, there may exist disordered conformal operators with dimensions 1 <i>&lt;</i> ∆ ≤ 3<i>/</i>2. In Lorentzian signature, we study the out-of-time-ordered correlator and show that these deformed theories exhibit near-maximal chaos in both regimes (when they exist). We comment on the relation between the anomalous scalings found here and those observed in certain near-extremal black holes in two and higher dimensions.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)084.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829733","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
OTOC and quamtum chaos of interacting scalar fields 相互作用标量场的OTOC与量子混沌
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-08 DOI: 10.1007/JHEP05(2026)072
Wung-Hong Huang
{"title":"OTOC and quamtum chaos of interacting scalar fields","authors":"Wung-Hong Huang","doi":"10.1007/JHEP05(2026)072","DOIUrl":"10.1007/JHEP05(2026)072","url":null,"abstract":"<p>Discretizing the <i>λϕ</i><sup>4</sup> scalar field theory on a lattice yields a system of coupled anharmonic oscillators with quadratic and quartic potentials. We begin by analyzing the two coupled oscillators in the second quantization method to derive several analytic relations to the second-order perturbation, which are then employed to numerically calculate the thermal out-of-time-order correlator (OTOC), <i>C</i><sub><i>T</i></sub> (<i>t</i>). We find that the function <i>C</i><sub><i>T</i></sub> (<i>t</i>) exhibits exponential growth over a long time window in the early stages, with Lyapunov exponent <i>λ</i> ~ <i>T</i> <sup>1/4</sup>, which diagnoses quantum chaos. We furthermore investigate the quantum chaos properties in a closed chain of N coupled anharmonic oscillators, which relates to the 1+1 dimensional interacting quantum scalar field theory. The results reveal an interesting property that the signatures of quantum chaos appear at low perturbative orders in the OTOC.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)072.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829727","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 importance of radiation-era initial conditions for tensor perturbations 关于张量摄动的辐射时代初始条件的重要性
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-08 DOI: 10.1007/JHEP05(2026)088
Dražen Glavan, Juraj Klarić, Philipp Klose, Ignacy Sawicki
{"title":"On the importance of radiation-era initial conditions for tensor perturbations","authors":"Dražen Glavan,&nbsp;Juraj Klarić,&nbsp;Philipp Klose,&nbsp;Ignacy Sawicki","doi":"10.1007/JHEP05(2026)088","DOIUrl":"10.1007/JHEP05(2026)088","url":null,"abstract":"<p>Conservation of super-horizon tensor fluctuations is crucial for connecting inflation to observations. Starting from first principles, recent works have found violations of this conservation if free-streaming radiation is produced during reheating. We show that the non-conservation is sensitive to the radiation initial state, and argue that the physical state should be affected by tensor perturbations that are already present during reheating. The deviation from super-horizon conservation is then negligible, recovering the standard result from kinetic theory. In contrast, a globally homogeneous and isotropic plasma state leads to a large suppression of tensor amplitudes. This difference between the local (physical) and global thermal equilibrium settles the discrepancy between the older and recent literature.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)088.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829732","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
Schwinger-Keldysh effective theory of charge transport: redundancies and systematic ω/T expansion Schwinger-Keldysh有效电荷输运理论：冗余和系统ω/T展开
IF 5.5 1区 物理与天体物理
Journal of High Energy Physics Pub Date : 2026-05-08 DOI: 10.1007/JHEP05(2026)079
Eren Firat, Andrew Gomes, Filippo Nardi, Riccardo Penco, Riccardo Rattazzi
{"title":"Schwinger-Keldysh effective theory of charge transport: redundancies and systematic ω/T expansion","authors":"Eren Firat,&nbsp;Andrew Gomes,&nbsp;Filippo Nardi,&nbsp;Riccardo Penco,&nbsp;Riccardo Rattazzi","doi":"10.1007/JHEP05(2026)079","DOIUrl":"10.1007/JHEP05(2026)079","url":null,"abstract":"<p>We study Schwinger-Keldysh effective field theories (EFTs) for systems with non-Abelian internal symmetries near thermal equilibrium. We consider two approaches that were put forward in the literature — one using a redundant Goldstone parameterization, the other employing an adjoint matter field — and demonstrate their complete equivalence by providing an explicit dictionary and proving their equivalence at the path integral level. Critically, we extend both formalisms to be compatible with the dynamical Kubo-Martin-Schwinger (DKMS) symmetry to all orders in ℏ<i>ω</i>/<i>T</i>, classifying all possible invariant kernels satisfying unitarity constraints. We also establish precise power-counting rules, clarifying the interplay between the semiclassical and hydrodynamic expansions. Our work provides a framework for studying non-Abelian charge transport and fluctuations to arbitrary orders in ℏ<i>ω</i>/<i>T</i>.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2026 5","pages":""},"PeriodicalIF":5.5,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2026)079.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830055","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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