Journal of High Energy Physics最新文献

{"title":"Canonical quantization of lattice Chern-Simons theory","authors":"Theodore Jacobson,&nbsp;Tin Sulejmanpasic","doi":"10.1007/JHEP11(2024)087","DOIUrl":"10.1007/JHEP11(2024)087","url":null,"abstract":"<p>We discuss the canonical quantization of U(1)_<i>k</i> Chern-Simons theory on a spatial lattice. In addition to the usual local Gauss law constraints, the physical Hilbert space is defined by 1-form gauge constraints implementing the compactness of the U(1) gauge group, and (depending on the details of the spatial lattice) non-local constraints which project out unframed Wilson loops. Though the ingredients of the lattice model are bosonic, the physical Hilbert space is finite-dimensional, with exactly <i>k</i> ground states on a spatial torus. We quantize both the bosonic (even level) and fermionic (odd level) theories, describing in detail how the latter depends on a choice of spin structure.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2024 11","pages":""},"PeriodicalIF":5.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP11(2024)087.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636647","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}

{"title":"Janus deformation of de Sitter space and transitions in gravitational algebras","authors":"Dongsu Bak,&nbsp;Chanju Kim,&nbsp;Sang-Heon Yi","doi":"10.1007/JHEP11(2024)094","DOIUrl":"10.1007/JHEP11(2024)094","url":null,"abstract":"<p>We consider a time-dependent <span>( mathcal{O}left(1/Gright) )</span> deformation of pure de Sitter (dS) space in dS gravity coupled to a massless scalar field. It is the dS counterpart of the AdS Janus deformation and interpolates two asymptotically dS spaces in the far past and the far future with a single deformation parameter. The Penrose diagram can be elongated along the time direction indefinitely as the deformation becomes large. After studying the classical properties of the geometry such as the area theorem and the fluctuation by a matter field, we explore the algebraic structure of the field operators on the deformed spacetime. We argue that the algebra is a von Neumann factor of type II_∞ for small deformations, but there occurs a transition to type I_∞ as the deformation increases so that the neck region of the deformed space becomes a Lorentzian cylinder.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2024 11","pages":""},"PeriodicalIF":5.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP11(2024)094.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636648","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}

{"title":"Wiener-Hopf solution of the free energy TBA problem and instanton sectors in the O(3) sigma model","authors":"Zoltán Bajnok,&nbsp;János Balog,&nbsp;István Vona","doi":"10.1007/JHEP11(2024)093","DOIUrl":"10.1007/JHEP11(2024)093","url":null,"abstract":"<p>Perturbation theory in asymptotically free quantum field theories is asymptotic. The factorially growing perturbative coefficients carry information about non-perturbative corrections, which can be related to renormalons and instantons. Using the Wiener-Hopf technique we determine the full analytic solution for the free energy density in the two dimensional O(<i>N</i>) sigma models. For <i>N</i> &gt; 3 there are no instantons, and we found that the perturbative series carries all the information about the non-perturbative corrections. However, in the O(3) case, we identify several non-perturbative sectors that are not related to the asymptotics of the perturbative series. The number of sectors depends on the observables: for the ground-state energy density we identify three sectors, which we attribute to instantons. For the free energy density in the running perturbative coupling we found infinitely many sectors.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2024 11","pages":""},"PeriodicalIF":5.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP11(2024)093.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636649","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}

{"title":"Spacetime dilaton in AdS3 × X holography","authors":"Vit Sriprachyakul","doi":"10.1007/JHEP11(2024)083","DOIUrl":"10.1007/JHEP11(2024)083","url":null,"abstract":"<p>We study the spectrum generating operators (DDF operators) for bosonic strings and superstrings in AdS₃ × <i>X</i> with pure, <i>generic</i> NSNS flux. The dual CFT is conjectured to be a deformed symmetric orbifold of <span>( {mathbb{R}}_{overset{sim }{Q}}times X )</span>, where <span>( {mathbb{R}}_{overset{sim }{Q}} )</span> denotes a linear dilaton theory with slope <span>( overset{sim }{Q} )</span>. In this paper, we construct DDF operators corresponding to the spacetime linear dilaton field in the limit where the worldsheet theory becomes free. The DDF operator gives another evidence supporting the proposed dual CFT. Furthermore, the DDF operator is constructed purely from the AdS₃ fields and thus, strongly implies the existence of <span>( {mathbb{R}}_{overset{sim }{Q}} )</span> for generic <i>X</i> that defines a consistent background.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2024 11","pages":""},"PeriodicalIF":5.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP11(2024)083.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636783","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}

{"title":"Electromagnetic duality for line defect correlators in ( mathcal{N} ) = 4 super Yang-Mills theory","authors":"Daniele Dorigoni,&nbsp;Zhihao Duan,&nbsp;Daniele R. Pavarini,&nbsp;Congkao Wen,&nbsp;Haitian Xie","doi":"10.1007/JHEP11(2024)084","DOIUrl":"10.1007/JHEP11(2024)084","url":null,"abstract":"<p>We study particular integrated correlation functions of two superconformal primary operators of the stress tensor multiplet in the presence of a half-BPS line defect labelled by electromagnetic charges (<i>p</i>, <i>q</i>) in <span>( mathcal{N} )</span> = 4 supersymmetric Yang-Mills theory (SYM) with gauge group SU(<i>N</i>). An important consequence of SL(2, <i>ℤ</i>) electromagnetic duality in <span>( mathcal{N} )</span> = 4 SYM is that correlators of line defect operators with different charges (<i>p</i>, <i>q</i>) must be related in a non-trivial manner when the complex coupling <i>τ</i> = <i>θ</i>/(2<i>π</i>) + <span>( 4pi i/{g}_{textrm{YM}}^2 )</span> is transformed appropriately. In this work we introduce a novel class of real-analytic functions whose automorphic properties with respect to SL(2, <i>ℤ</i>) match the expected transformations of line defect operators in <span>( mathcal{N} )</span> = 4 SYM under electromagnetic duality. At large <i>N</i> and fixed <i>τ</i>, the correlation functions we consider are related to scattering amplitudes of two gravitons from extended (<i>p</i>, <i>q</i>)-strings in the holographic dual type IIB superstring theory. We show that the large-<i>N</i> expansion coefficients of the integrated two-point line defect correlators are given by finite linear combinations with rational coefficients of elements belonging to this class of automorphic functions. On the other hand, for any fixed value of <i>N</i> we conjecture that the line defect integrated correlators can be expressed as formal infinite series over such automorphic functions. The resummation of this series produces a simple lattice sum representation for the integrated line defect correlator that manifests its automorphic properties. We explicitly demonstrate this construction for the cases with gauge group SU(2) and SU(3). Our results give direct access to non-perturbative integrated correlators in the presence of an ’t Hooft-line defect, observables otherwise very difficult to compute by other means.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2024 11","pages":""},"PeriodicalIF":5.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP11(2024)084.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636917","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}

{"title":"Cold nuclear matter effects on azimuthal decorrelation in heavy-ion collisions","authors":"Néstor Armesto,&nbsp;Florian Cougoulic,&nbsp;Bin Wu","doi":"10.1007/JHEP11(2024)081","DOIUrl":"10.1007/JHEP11(2024)081","url":null,"abstract":"<p>The assumption of factorization lies at the core of calculations of medium effects on observables computable in perturbative Quantum Chromodynamics. In this work we examine this assumption, for which we propose a setup to study hard processes and bulk nuclear matter in heavy-ion collisions on the same footing using the Glauber modelling of heavy nuclei. To exemplify this approach, we calculate the leading-order corrections to azimuthal decorrelation in Drell-Yan and boson-jet processes due to cold nuclear matter effects, not considering radiation. At leading order in both the hard momentum scale and the nuclear size, the impact-parameter dependent cross section is found to factorize for both processes. The factorization formula involves a convolution of the hard cross section with the medium-modified parton distributions, and, for boson-jet production, the medium-modified jet function.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2024 11","pages":""},"PeriodicalIF":5.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP11(2024)081.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636781","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}

{"title":"Axion species scale and axion weak gravity conjecture-like bound","authors":"Min-Seok Seo","doi":"10.1007/JHEP11(2024)082","DOIUrl":"10.1007/JHEP11(2024)082","url":null,"abstract":"<p>As a cutoff scale of quantum gravity, the species scale can be defined by the scale at which the perturbativity of the non-renormalizable gravitational interaction begins to break down. Since it is determined by the number of species in the effective field theory, we can find the close connection to the distance conjecture, which predicts the lowering of the cutoff at the asymptotic limit of the moduli space caused by the descent of a tower of states from UV. Meanwhile, the same kind of the cutoff scale can be obtained from any non-renormalizable interaction, in particular the interaction between the axion and the gauge field through the <i>θF</i> ∧ <i>F</i> term. Demanding this ‘axion species scale’ not to exceed the gravitational species scale, we obtain the bound (8<i>π</i>²/<i>g</i>²)<i>f</i> ≲ <i>M</i>_Pl. This is quite similar to the axion weak gravity conjecture bound, but can be applied to any gauge as well as the string interactions which are relevant to towers of states. We also investigate the implications of the (axion) species scale and the axion weak gravity conjecture-like bound by considering the Peccei-Quinn charge reduction of black hole through the interaction between black hole and the string or wormhole.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2024 11","pages":""},"PeriodicalIF":5.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP11(2024)082.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636784","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}

{"title":"Constraints for twist-two alien operators in QCD","authors":"G. Falcioni,&nbsp;F. Herzog,&nbsp;S. Moch,&nbsp;S. Van Thurenhout","doi":"10.1007/JHEP11(2024)080","DOIUrl":"10.1007/JHEP11(2024)080","url":null,"abstract":"<p>Parton evolution equations in QCD are controlled by the anomalous dimensions of gauge-invariant twist-two spin-<i>N</i> quark and gluon operators. Under renormalization, these mix with gauge-variant operators of the same quantum numbers, referred to as alien operators. Our work addresses the systematic study of these alien operators at arbitrary spin <i>N</i>, using generalized BRST symmetry relations to derive their couplings and Feynman rules at all values of <i>N</i>. We observe how the all-<i>N</i> structure of the generalized (anti-)BRST constraints relates the couplings of alien operators with <i>n</i> + 1 gluons to those with <i>n</i> gluons. Realizing a bootstrap, we present all one-loop results necessary for performing the operator renormalization up to four loops in QCD.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2024 11","pages":""},"PeriodicalIF":5.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP11(2024)080.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636782","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}

{"title":"New purely damped pairs of quasinormal modes in a hot and dense strongly-coupled plasma","authors":"Gustavo de Oliveira,&nbsp;Romulo Rougemont","doi":"10.1007/JHEP11(2024)079","DOIUrl":"10.1007/JHEP11(2024)079","url":null,"abstract":"<p>Perturbed black holes exhibit damped oscillations whose eigenfrequencies define their quasinormal modes (QNMs). In the case of asymptotically Anti-de Sitter (AdS) black holes, the spectra of QNMs are related to the near-equilibrium behavior of specific strongly interacting quantum field theories via the holographic gauge-gravity duality. In the present work, we numerically obtain the spectra of homogeneous non-hydrodynamic QNMs of a top-down holographic construction called the 2 R-Charge Black Hole (2RCBH) model, which describes a hot and dense strongly-coupled plasma. The main result is the discovery of a new structure of pairs of purely imaginary QNMs. Those new purely damped QNMs dominate the late time equilibration of the strongly-coupled plasma at large values of the chemical potential, while at lower values the fundamental QNMs are instead ordinary poles with imaginary and real parts describing oscillatory decaying perturbations. We also observe a new phenomenon of asymptotic pole fusion for different pairs of purely imaginary QNMs at asymptotically large values of the chemical potential. This phenomenon corresponds to the asymptotic merging of the two poles within each pair of purely imaginary QNMs, with the different pairs of merged poles being evenly spaced by a constant value of 4<i>π</i> in all the different perturbation channels associated to different irreducible representations of the spatial SO(3) rotation symmetry of the medium. In particular, this indicates that characteristic equilibration times for the plasma develop upper bounds that cannot be surpassed by further doping the medium with increasing values of the chemical potential.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2024 11","pages":""},"PeriodicalIF":5.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP11(2024)079.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636787","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}

{"title":"Weak cosmic censorship with excited scalar fields and bound on charge-to-mass ratio","authors":"Si-Yuan Cui,&nbsp;Tie-Feng Fang,&nbsp;Yong-Qiang Wang","doi":"10.1007/JHEP11(2024)085","DOIUrl":"10.1007/JHEP11(2024)085","url":null,"abstract":"<p>Recent study in [1] discovered that introducing a massive charged scalar field and requiring the Weak Gravity Conjecture (WGC) to hold can eliminate a class of Weak Cosmic Censorship Conjecture (WCCC) counterexamples in anti-de Sitter spacetime, indicating a potential connection between WCCC and WGC. In this paper, we extend the study to the case of excited-state scalar fields, and numerically construct the static solutions of excited massive charged scalar fields coupled to the Einstein-Maxwell field in four dimensional spacetime with asymptotically anti-de Sitter boundary conditions. In the absence of scalar field, there is a class of counterexamples to cosmic censorship. However, after adding the scalar field with sufficiently large charge, the original counterexamples can be removed and cosmic censorship is preserved. We find this conclusion also applies to the excited-state of scalar field. There is a minimum value <span>( {q}_c^{textrm{bound}} )</span>. When the charge of the excited scalar field is larger than this minimum value, for sufficiently large boundary electric amplitude <i>a</i>, there will not appear a region with arbitrarily large curvature. That means there exists lower bound on the charge for excited state fields which protects cosmic censorship from being violated.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2024 11","pages":""},"PeriodicalIF":5.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP11(2024)085.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636780","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}