Journal of High Energy Physics最新文献_第4页

Consistency between bulk and boundary causalities in asymptotically anti-de Sitter spacetimes 渐近反德西特时空中体积和边界因果关系的一致性

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-10-21 DOI: 10.1007/JHEP10(2025)184

Lei Fu, Keisuke Izumi, Daisuke Yoshida

引用次数: 0

Two approaches to the holomorphic modular bootstrap 全纯模自举的两种方法

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-10-21 DOI: 10.1007/JHEP10(2025)181

Suresh Govindarajan, Jagannath Santara

引用次数: 0

Mass-deformed super Yang-Mills theory on ( {mathbbm{T}}^4 ): sum over twisted sectors, θ-angle, and CP violation 关于( {mathbbm{T}}^4 )的质量变形超Yang-Mills理论：扭曲扇区和、θ-角和CP违背

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-10-21 DOI: 10.1007/JHEP10(2025)182

Mohamed M. Anber, Erich Poppitz

{"title":"Mass-deformed super Yang-Mills theory on ( {mathbbm{T}}^4 ): sum over twisted sectors, θ-angle, and CP violation","authors":"Mohamed M. Anber, Erich Poppitz","doi":"10.1007/JHEP10(2025)182","DOIUrl":"10.1007/JHEP10(2025)182","url":null,"abstract":"We study SU(N) super Yang-Mills theory with a small gaugino mass m and vacuum angle θ on the four-torus ( {mathbbm{T}}^4 ) with ’t Hooft twisted boundary conditions. Introducing a detuning parameter ∆, which measures the deviation from an exactly self-dual ( {mathbbm{T}}^4 ), and working in the limits mLN ≪ ΛLN ≪ 1 and ( frac{left(N-1right){m}^2{L}^2}{4pi}ll Delta ll 1 ), where L is the torus size and Λ the strong-coupling scale, we compute the scalar and pseudo-scalar condensates to leading order in m2L2/∆. The twists generate fractional-charge instantons, and we show that summing over all such contributions is crucial for reproducing the correct physical observables in the decompactified strong-coupling regime. From a Hamiltonian perspective, the sum over twisted sectors, already at small torus size, projects in the m = 0 limit onto a definite superselection sector of the ℝ4 theory. In the massless limit, we recover the exact value of the gaugino condensate |〈λλ〉| = 16π2Λ3, and demonstrate how a spurious U(1) symmetry eliminates all ( mathcal{CP} )-violating effects. Our results are directly testable in lattice simulations, and our method extends naturally to non-supersymmetric gauge theories.","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 10","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP10(2025)182.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145352714","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

Unveiling atomic electron motion effects in e+e− high energy collisions at NA64 揭示NA64中e+e -高能碰撞中的原子电子运动效应

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-10-21 DOI: 10.1007/JHEP10(2025)174

Fernando Arias-Aragón, Giovanni Grilli di Cortona, Enrico Nardi

{"title":"Unveiling atomic electron motion effects in e+e− high energy collisions at NA64","authors":"Fernando Arias-Aragón, Giovanni Grilli di Cortona, Enrico Nardi","doi":"10.1007/JHEP10(2025)174","DOIUrl":"10.1007/JHEP10(2025)174","url":null,"abstract":"Atomic electron motion is responsible for well-studied effects observed in low-energy (MeV-scale) processes. Recently, interest in this phenomenon has also emerged within the high-energy physics community, due to its potential to increase significantly the center-of-mass energy in fixed-target experiments. However, direct experimental evidence of this effect in high energy collisions has yet to be observed. We argue that a striking manifestation of atomic electron momenta could be revealed by the NA64 experiment at CERN during the proposed run with a 40 GeV positron beam. At this energy, μ+μ− production via positron annihilation on electrons at rest is kinematically forbidden. The detection of μ+μ− pairs from the annihilation channel would thus constitute direct evidence of an increase in the center-of-mass energy resulting from atomic electron motion. We also investigate the expected signatures for the proposed 60 GeV run, as well as for the data already collected at 70 GeV. Intriguingly, in both these cases, the predicted number of μ+μ− pairs from positron annihilation is reduced compared to the electron-at-rest approximation.","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 10","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP10(2025)174.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145352372","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

Massless monopole-string-domain wall fermions and polyhedral vacuum fermions 无质量单极弦畴壁费米子和多面体真空费米子

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-10-21 DOI: 10.1007/JHEP10(2025)167

Minoru Eto, Yuito Suzuki

引用次数: 0

The mass of the lightest gluelump 最轻的胶团的质量

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-10-21 DOI: 10.1007/JHEP10(2025)176

Cesar Ayala, Antonio Pineda

{"title":"The mass of the lightest gluelump","authors":"Cesar Ayala, Antonio Pineda","doi":"10.1007/JHEP10(2025)176","DOIUrl":"10.1007/JHEP10(2025)176","url":null,"abstract":"We consider QCD with nf = 0 and nf = 3 light quarks. We present the most up-to-date determinations for the normalizations of the leading renormalons of the pole mass, the singlet static potential, the octet static potential, and the gluelump energy. These read ( {Z}_m^{overline{textrm{MS}}} ) = ( -{Z}_{V_s}^{overline{textrm{MS}}}/2 ) = {0.604(17), 0.551(20)}, ( {Z}_{V_o}^{overline{textrm{MS}}} ) = {0.136(8), 0.121(13)}, and ( {Z}_A^{overline{textrm{MS}}} ) = {–1.343(36), –1.224(43)}, for nf = 0 and nf = 3, respectively. For nf = 0, we obtain two independent renormalization group invariant and renormalization scale independent determinations of the energy of the ground state gluelump in the principal value summation scheme: ( {Lambda}_B^{textrm{PV}}=2.47(9){r}_0^{-1} ) and ( {Lambda}_B^{textrm{PV}}=2.38(11){r}_0^{-1} ) where ( {r}_0^{-1} ) ≈ 400 MeV. Averaging these results, we obtain ( {Lambda}_B^{textrm{PV}}=2.44(7){r}_0^{-1} ).","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 10","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP10(2025)176.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145352373","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

Symmetry and causality constraints on Fermi liquids 费米液体的对称性和因果性约束

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-10-21 DOI: 10.1007/JHEP10(2025)171

Luca V. Delacrétaz, Subham Dutta Chowdhury, Umang Mehta

引用次数: 0

Nonperturbative quantum gravity in a closed Lorentzian universe 封闭洛伦兹宇宙中的非微扰量子引力

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-10-21 DOI: 10.1007/JHEP10(2025)166

Yasunori Nomura, Tomonori Ugajin

{"title":"Nonperturbative quantum gravity in a closed Lorentzian universe","authors":"Yasunori Nomura, Tomonori Ugajin","doi":"10.1007/JHEP10(2025)166","DOIUrl":"10.1007/JHEP10(2025)166","url":null,"abstract":"We study how meaningful physical predictions can arise in nonperturbative quantum gravity in a closed Lorentzian universe. In such settings, recent developments suggest that the quantum gravitational Hilbert space is one-dimensional and real for each α-sector, as induced by spacetime wormholes. This appears to obstruct the conventional quantum-mechanical prescription of assigning probabilities via projection onto a basis of states. While previous approaches have introduced external observers or augmented the theory to resolve this issue, we argue that quantum gravity itself contains all the necessary ingredients to make physical predictions. We demonstrate that the emergence of classical observables and probabilistic outcomes can be understood as a consequence of partial observability: physical observers access only a subsystem of the universe. Tracing out the inaccessible degrees of freedom yields reduced density matrices that encode classical information, with uncertainties exponentially suppressed by the environment’s entropy. We develop this perspective using both the Lorentzian path integral and operator formalisms and support it with a simple microscopic model. Our results show that quantum gravity in a closed universe naturally gives rise to meaningful, robust predictions without recourse to external constructs.","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 10","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP10(2025)166.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145352377","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

Thermal scalar field stress tensor on a two dimensional black hole and its near horizon properties 二维黑洞的热标量场应力张量及其近视界性质

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-10-21 DOI: 10.1007/JHEP10(2025)183

Saurav Samanta, Bibhas Ranjan Majhi

引用次数: 0

Three-body non-locality in particle decays 粒子衰变中的三体非定域性

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-10-17 DOI: 10.1007/JHEP10(2025)160

Paweł Horodecki, Kazuki Sakurai, Abhyoudai S. Shaleena, Michael Spannowsky

引用次数: 0