arXiv - PHYS - High Energy Physics - Theory最新文献_第4页

Renormalization of the Einstein-Cartan Theory in First-Order Form 一阶形式的爱因斯坦-卡尔坦理论重正化

arXiv - PHYS - High Energy Physics - Theory Pub Date : 2024-09-16 DOI: arxiv-2409.10493

F. T. Brandt, J. Frenkel, S. Martins-Filho, D. G. C. McKeon

引用次数: 0

The propagator field theory revisited: a Lorentz symmetry breaking approach 重访传播者场论：打破洛伦兹对称性的方法

arXiv - PHYS - High Energy Physics - Theory Pub Date : 2024-09-16 DOI: arxiv-2409.10313

R. Cartas-Fuentevilla, S. González-Salud, R. Bárcena-Ramos, J. Berra-Montiel

引用次数: 0

Theoretical Probes of Higgs-Axion non-perturbative Couplings 希格斯-橡子非微扰耦合的理论探测

arXiv - PHYS - High Energy Physics - Theory Pub Date : 2024-09-16 DOI: arxiv-2409.10709

V. K. Oikonomou

{"title":"Theoretical Probes of Higgs-Axion non-perturbative Couplings","authors":"V. K. Oikonomou","doi":"arxiv-2409.10709","DOIUrl":"https://doi.org/arxiv-2409.10709","url":null,"abstract":"In this work we investigate the phenomenological implications of several\u0000non-trivial axion-Higgs couplings, which cover most of the possible\u0000non-perturbative scenarios. Specifically we consider the combination of having\u0000higher order non-renormalizable Higgs-axion couplings originating from a weakly\u0000coupled effective theory combined with non-perturbative couplings of the form\u0000$sim epsilon Lambda_c^2|H|^2cos (frac{phi}{f_a})$. Since we consider the\u0000misalignment axion, the non-perturbative couplings can be expanded in the form\u0000of a perturbation expansion in powers of $phi/f_a$, thus after the electroweak\u0000symmetry breaking, the effective potential of the axion is drastically affected\u0000by these terms. We investigate the phenomenological implications of these terms\u0000for various values of the mass scale $Lambda_c$, and some scenarios are\u0000theoretically disfavored, while other scenarios with non-perturbative\u0000Higgs-axion couplings of the form $sim epsilon Lambda_c^2|H|^2cos\u0000(frac{phi}{f_a})$ with $Lambda_csim 10^{-10}times m_a$ and $m_asim\u000010^{-10},$eV, lead to a characteristic pattern in the stochastic gravitational\u0000wave background via the deformation of the background equation of state\u0000parameter occurring at frequencies probed by the Einstein Telescope. We also\u0000consider loop effects from the Higgs sector caused by the term $sim epsilon\u0000Lambda_c^2|H|^2cos (frac{phi}{f_a})$ if we close the Higgs in one loop.","PeriodicalId":501339,"journal":{"name":"arXiv - PHYS - High Energy Physics - Theory","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reinforcement learning-based statistical search strategy for an axion model from flavor 基于强化学习的风味轴子模型统计搜索策略

arXiv - PHYS - High Energy Physics - Theory Pub Date : 2024-09-16 DOI: arxiv-2409.10023

Satsuki Nishimura, Coh Miyao, Hajime Otsuka

{"title":"Reinforcement learning-based statistical search strategy for an axion model from flavor","authors":"Satsuki Nishimura, Coh Miyao, Hajime Otsuka","doi":"arxiv-2409.10023","DOIUrl":"https://doi.org/arxiv-2409.10023","url":null,"abstract":"We propose a reinforcement learning-based search strategy to explore new\u0000physics beyond the Standard Model. The reinforcement learning, which is one of\u0000machine learning methods, is a powerful approach to find model parameters with\u0000phenomenological constraints. As a concrete example, we focus on a minimal\u0000axion model with a global $U(1)$ flavor symmetry. Agents of the learning\u0000succeed in finding $U(1)$ charge assignments of quarks and leptons solving the\u0000flavor and cosmological puzzles in the Standard Model, and find more than 150\u0000realistic solutions for the quark sector taking renormalization effects into\u0000account. For the solutions found by the reinforcement learning-based analysis,\u0000we discuss the sensitivity of future experiments for the detection of an axion\u0000which is a Nambu-Goldstone boson of the spontaneously broken $U(1)$. We also\u0000examine how fast the reinforcement learning-based searching method finds the\u0000best discrete parameters in comparison with conventional optimization methods.\u0000In conclusion, the efficient parameter search based on the reinforcement\u0000learning-based strategy enables us to perform a statistical analysis of the\u0000vast parameter space associated with the axion model from flavor.","PeriodicalId":501339,"journal":{"name":"arXiv - PHYS - High Energy Physics - Theory","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-perturbative approach for scalar particle production in Higgs-$R^2$ inflation 希格斯-$R^2$膨胀中标量粒子产生的非微扰方法

arXiv - PHYS - High Energy Physics - Theory Pub Date : 2024-09-16 DOI: arxiv-2409.09999

Flavio Pineda, Luis O. Pimentel

引用次数: 0

New shape for cross-bispectra in Chern-Simons gravity 切尔-西蒙斯引力中交叉谱的新形状

arXiv - PHYS - High Energy Physics - Theory Pub Date : 2024-09-16 DOI: arxiv-2409.09935

Perseas Christodoulidis, Jinn-Ouk Gong, Wei-Chen Lin, Maria Mylova, Misao Sasaki

引用次数: 0

Leading Twist-Two Gauge-Variant Counterterms 前捻--两个量纲变量反项

arXiv - PHYS - High Energy Physics - Theory Pub Date : 2024-09-16 DOI: arxiv-2409.10303

Thomas Gehrmann, Andreas von Manteuffel, Tong-Zhi Yang

引用次数: 0

Packaging particles in curved spacetimes 在弯曲时空中包装粒子

arXiv - PHYS - High Energy Physics - Theory Pub Date : 2024-09-16 DOI: arxiv-2409.10133

Jesse Huhtala, Iiro Vilja

引用次数: 0

The random free field scalar theory 随机自由场标量理论

arXiv - PHYS - High Energy Physics - Theory Pub Date : 2024-09-16 DOI: arxiv-2409.10608

Alessandro Piazza, Marco Serone, Emilio Trevisani

{"title":"The random free field scalar theory","authors":"Alessandro Piazza, Marco Serone, Emilio Trevisani","doi":"arxiv-2409.10608","DOIUrl":"https://doi.org/arxiv-2409.10608","url":null,"abstract":"Quantum field theories with quenched disorder are so hard to study that even\u0000exactly solvable free theories present puzzling aspects. We consider a free\u0000scalar field $phi$ in $d$ dimensions coupled to a random source $h$ with\u0000quenched disorder. Despite the presence of a mass scale governing the disorder\u0000distribution, we derive a new description of the theory that allows us to show\u0000that the theory is gapless and invariant under conformal symmetry, which acts\u0000in a non-trivial way on $phi$ and $h$. This manifest CFT description reveals\u0000the presence of exotic continuous symmetries, such as nilpotent bosonic ones,\u0000in the quenched theory. We also reconsider Cardy's CFT description defined\u0000through the replica trick. In this description, the nilpotent symmetries reveal\u0000a striking resemblance with Parisi-Sourlas supersymmetries. We provide explicit\u0000maps of correlation functions between such CFTs and the original quenched\u0000theory. The maps are non-trivial and show that conformal behaviour is manifest\u0000only when considering suitable linear combinations of averages of products of\u0000correlators. We also briefly discuss how familiar notions like normal ordering\u0000of composite operators and OPE can be generalized in the presence of the more\u0000complicated local observables in the quenched theory.","PeriodicalId":501339,"journal":{"name":"arXiv - PHYS - High Energy Physics - Theory","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Complex Saddles of Truncated String Amplitudes 截断弦振幅的复鞍座

arXiv - PHYS - High Energy Physics - Theory Pub Date : 2024-09-16 DOI: arxiv-2409.10241

Takuya Yoda

{"title":"Complex Saddles of Truncated String Amplitudes","authors":"Takuya Yoda","doi":"arxiv-2409.10241","DOIUrl":"https://doi.org/arxiv-2409.10241","url":null,"abstract":"String scattering amplitudes in the high energy asymptotic region have been\u0000studied by saddle point approximation. Recently, it was pointed out that\u0000infinitely many complex saddles contribute to string amplitudes even at\u0000tree-level after redefining the original formal integration contour so that the\u0000new contour analytically continues amplitudes appropriately. It is a\u0000challenging problem to identify which saddles contribute to higher genus\u0000corrections of string amplitudes. In this paper, we construct QFT toy models\u0000which have the same infinite mass tower as string amplitudes but ignoring\u0000degeneracies. Their higher loop Feynman diagrams are evaluated by identifying\u0000their contributing complex saddles. We find that the saddles associated with\u0000infinitely many stringy excitations provide highly oscillatory terms to the\u0000amplitudes. We conjecture that string amplitudes, as functions of momenta,\u0000approach multi-fractal functions in the high energy asymptotic regions if\u0000higher genus contributions are fully included. Their fractal dimensions should\u0000be determined purely by the type of string theory and the spacetime dimension\u0000where string scatterings occur.","PeriodicalId":501339,"journal":{"name":"arXiv - PHYS - High Energy Physics - Theory","volume":"29 22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0