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New constraint on dark photon at T2K off-axis near detector T2K离轴近探测器暗光子的新约束
1区 物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS Pub Date : 2023-11-10 DOI: 10.1007/jhep11(2023)056
Takeshi Araki, Kento Asai, Tomoya Iizawa, Hidetoshi Otono, Takashi Shimomura, Yosuke Takubo
A bstract The T2K experiment is one of the most powerful long-baseline experiments to investigate neutrino oscillations. The off-axis near detector called ND280 is installed 280 m downstream from the neutrino production target to measure the neutrino energy spectrum. In this paper, we study the capability of the ND280 detector to search for the dark photon produced through the meson rare decay and proton bremsstrahlung processes at the proton beam dump. We find that the ten-year operation of T2K with the ND280 detector excludes the unexplored parameter region for the dark photon mass and kinetic mixing. We also show that a broader parameter region can be searched by the ND280 in the future T2K operation for dark photon as well as U(1) B−L gauge boson.
T2K实验是研究中微子振荡的最强大的长基线实验之一。离轴近探测器ND280安装在中微子产生目标下游280米处,用于测量中微子能谱。本文研究了ND280探测器在质子束流场中搜索介子稀有衰变和质子轫致辐射过程产生的暗光子的能力。我们发现,在ND280探测器的十年运行中,T2K排除了暗光子质量和动力学混合的未探测参数区域。我们还表明,ND280在未来的T2K操作中可以搜索到更宽的参数区域,用于暗光子和U(1) B−L规范玻色子。
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引用次数: 1
Gravitoelectric dynamical tides at second post-Newtonian order 第二后牛顿阶的引力电动力潮汐
1区 物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS Pub Date : 2023-11-10 DOI: 10.1007/jhep11(2023)067
Manoj K. Mandal, Pierpaolo Mastrolia, Hector O. Silva, Raj Patil, Jan Steinhoff
A bstract We present a gravitoelectric quadrupolar dynamical tidal-interaction Hamiltonian for a compact binary system, that is valid to second order in the post-Newtonian expansion. Our derivation uses the diagrammatic effective field theory approach, and involves Feynman integrals up to two loops, evaluated with the dimensional regularization scheme. We also derive the effective Hamiltonian for adiabatic tides, obtained by taking the appropriate limit of the dynamical effective Hamiltonian, and we check its validity by verifying the complete Poincaré algebra. In the adiabatic limit, we also calculate two gauge-invariant observables, namely, the binding energy for a circular orbit and the scattering angle in a hyperbolic scattering. Our results are important for developing accurate gravitational waveform models for neutron-star binaries for present and future gravitational-wave observatories.
摘要本文给出了紧致二元系统的引力电四极动态潮汐相互作用哈密顿量,该哈密顿量在后牛顿展开中二阶有效。我们的推导使用图解有效场论方法,并涉及到两个循环的费曼积分,用维度正则化方案进行评估。我们还推导了绝热潮汐的有效哈密顿量,这是通过取动态有效哈密顿量的适当极限得到的,并通过验证完整的poincarcar代数来验证其有效性。在绝热极限下,我们还计算了两个标准不变的观测值,即圆轨道的结合能和双曲散射的散射角。我们的结果对于现在和未来的引力波天文台建立精确的中子星双星引力波模型具有重要意义。
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引用次数: 4
Constraints on NJL four-fermion effective interactions from neutrinoless double beta decay 中微子双β衰变对NJL四费米子有效相互作用的约束
1区 物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS Pub Date : 2023-11-09 DOI: 10.1007/jhep11(2023)054
L. Pacioselli, O. Panella, M. Presilla, S.-S. Xue
A bstract We study the contribution of a heavy right-handed Majorana neutrino to neutrinoless double beta decay (0 νββ ) via four-fermion effective interactions of Nambu-Jona-Lasinio (NJL) type. In this physical scenario, the sterile neutrino contributes to the nuclear transition through gauge, contact, and mixed interactions. Using the lower limit on the half-life of 0 νββ from the KamLAND-Zen experiment, we then constrain the effective right-handed coupling between the sterile neutrino and the W boson: $$ {mathcal{G}}_R^W $$ G R W . Eventually, we show that the obtained bounds are compatible with those found in the literature, which highlights the complementarity of this type of phenomenological study with high-energy experiments.
摘要研究了重右手马约拉纳中微子通过Nambu-Jona-Lasinio (NJL)型四费米子有效相互作用对无中微子双β衰变(0 νββ)的贡献。在这种物理情况下,无菌中微子通过规范、接触和混合相互作用促进核跃迁。利用KamLAND-Zen实验中0 νββ的半衰期下限,我们约束了不育中微子和W玻色子之间的有效右手耦合:$$ {mathcal{G}}_R^W $$ G R W。最后,我们证明所得到的界与文献中发现的界是相容的,这突出了这种类型的现象学研究与高能实验的互补性。
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引用次数: 0
The universal one-loop effective action with gravity 万向单圈有效重力作用
1区 物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS Pub Date : 2023-11-09 DOI: 10.1007/jhep11(2023)045
Rémy Larue, Jérémie Quevillon
A bstract We complete the so-called Universal One-Loop Effective Action (UOLEA) with effects of gravity and provide a systematic approach to incorporate higher dimensional operators in curved spacetime. The functional determinant stemming from the path integral is computed using the Covariant Derivative Expansion (CDE), in a momentum representation that does not rely on a specific choice of coordinate to be defined, as it often is. This efficient approach manifests an interesting novelty as it allows to integrate out chiral fermions in curved spacetime in a direct manner leading to new operators involving the curvature, and provides a new alternative to the use of Feynman diagrams in that regard. The method presented would very well fit in a code that performs CDE, offering the possibility to integrate out at one-loop fields on a curved spacetime background, including spin-2 fields, like the graviton. Eventually these results should provide an interesting way to study low energy effects of UV completions of gravity.
我们完成了所谓的万向单环有效作用(Universal One-Loop Effective Action, UOLEA),并提供了一种在弯曲时空中引入高维算子的系统方法。由路径积分产生的功能行列式使用协变导数展开(CDE)计算,在动量表示中不依赖于要定义的特定坐标选择,因为它通常是。这种有效的方法表现出一种有趣的新奇,因为它允许在弯曲时空中以直接的方式积分手性费米子,从而导致涉及曲率的新算子,并在这方面提供了使用费曼图的新选择。所提出的方法将非常适合于执行CDE的代码,提供了在弯曲时空背景上的单环场集成的可能性,包括自旋为2的场,如引力子。最终,这些结果将为研究重力紫外线完井的低能量效应提供一种有趣的方法。
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引用次数: 3
Bootstrap, Markov Chain Monte Carlo, and LP/SDP hierarchy for the lattice Ising model 自举,马尔科夫链蒙特卡罗,和LP/SDP层次的晶格Ising模型
1区 物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS Pub Date : 2023-11-09 DOI: 10.1007/jhep11(2023)047
Minjae Cho, Xin Sun
A bstract Bootstrap is an idea that imposing consistency conditions on a physical system may lead to rigorous and nontrivial statements about its physical observables. In this work, we discuss the bootstrap problem for the invariant measure of the stochastic Ising model defined as a Markov chain where probability bounds and invariance equations are imposed. It is described by a linear programming (LP) hierarchy whose asymptotic convergence is shown by explicitly constructing the invariant measure from the convergent sequence of moments. We also discuss the relation between the LP hierarchy for the invariant measure and a recently introduced semidefinite programming (SDP) hierarchy for the Gibbs measure of the statistical Ising model based on reflection positivity and spin-flip equations.
抽象引导是一种思想,它认为在物理系统上施加一致性条件可能会导致关于其物理可观察对象的严格和非平凡的陈述。在这项工作中,我们讨论了定义为马尔可夫链的随机Ising模型的不变量测度的自举问题,该模型具有概率界和不变量方程。用线性规划(LP)层次来描述它的渐近收敛性,该层次通过从收敛的矩序列显式构造不变测度来证明。我们还讨论了基于反射正性和自旋翻转方程的统计Ising模型的不变测度的LP层次与最近引入的吉布斯测度的半定规划(SDP)层次之间的关系。
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引用次数: 1
Anomalous dimensions in hypercubic theories 超立方理论中的异常维数
1区 物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS Pub Date : 2023-11-09 DOI: 10.1007/jhep11(2023)051
Alexander Bednyakov, Johan Henriksson, Stefanos R. Kousvos
A bstract We perform a comprehensive perturbative study of the operator spectrum in multi-scalar theories with hypercubic global symmetry. This includes working out symmetry representations and their corresponding tensor structures. These structures are then used to compute the anomalous dimensions of scalar operators with up to four fields and arbitrary representations to six-loop order. Moreover, we determine one-loop anomalous dimensions for a large number of low-lying operators in the spectrum which include more powers of the fundamental field and/or insertions of derivatives. As an aside we show how projectors used in the conformal bootstrap can be conveniently reused in computations of anomalous dimensions. The results of our study are of use to the conformal bootstrap. They also illuminate features of conformal perturbation theory and the large n expansion. Our results may be of interest for various crossover phenomena in statistical field theory. In total, we compute the scaling dimension of more than 300 operators, of which 16 are computed to six-loops. Our analysis is exhaustive with respect to group theory up to rank 4 for any number of flavours n , and also exhaustive with respect to which representations exist for n ⩽ 4.
本文对具有超三次全局对称的多标量理论中的算子谱进行了全面的微扰研究。这包括计算对称表示及其相应的张量结构。然后使用这些结构来计算具有最多四个字段和任意表示到六循环顺序的标量算子的异常维。此外,我们确定了频谱中包含更多基本场的幂次和/或导数插入的大量低洼算子的单环异常维数。作为题外话,我们展示了在共形自举中使用的投影仪如何在计算异常维时方便地重用。本文的研究结果对保角自举具有一定的指导意义。它们还阐明了共形微扰理论和大n展开的特征。我们的结果可能对统计领域理论中的各种交叉现象感兴趣。我们总共计算了300多个算子的缩放维度,其中16个被计算为六循环。对于任何数量的口味n,我们的分析对于群论来说是详尽的,直到排名4,并且对于n≥4存在的表示也是详尽的。
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引用次数: 1
Differential contracting homotopy in higher-spin theory 高自旋理论中的微分收缩同伦
1区 物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS Pub Date : 2023-11-09 DOI: 10.1007/jhep11(2023)048
M. A. Vasiliev
A bstract A new efficient approach to the analysis of nonlinear higher-spin equations, that treats democratically auxiliary spinor variables Z A and integration homotopy parameters in the non-linear vertices of the higher-spin theory, is developed. Being most general, the proposed approach is the same time far simpler than those available so far. In particular, it is free from the necessity to use the Schouten identity. Remarkably, the problem of reconstruction of higher-spin vertices is mapped to certain polyhedra cohomology in terms of homotopy parameters themselves. The new scheme provides a powerful tool for the study of higher-order corrections in higher-spin theory and, in particular, its spin-locality. It is illustrated by the analysis of the lower order vertices, reproducing not only the results obtained previously by the shifted homotopy approach but also projectively-compact vertices with the minimal number of derivatives, that were so far unreachable within that scheme.
提出了一种新的分析非线性高自旋方程的有效方法,即民主地处理辅助自旋变量za和高自旋理论非线性顶点上的积分同伦参数。作为最通用的方法,所提出的方法同时比目前可用的方法简单得多。特别是,它不需要使用Schouten同一性。值得注意的是,高自旋顶点的重构问题通过同伦参数本身映射到某些多面体上同调。新方案为研究高自旋理论中的高阶修正,特别是其自旋局部性提供了强有力的工具。通过对低阶顶点的分析来说明这一点,不仅再现了先前由位移同伦方法得到的结果,而且再现了在该方案中迄今为止无法到达的具有最小导数数的投影紧致顶点。
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引用次数: 1
Light-cone gauge in non-relativistic AdS5×S5 string theory 非相对论性弦理论中的光锥规范AdS5×S5
1区 物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS Pub Date : 2023-11-09 DOI: 10.1007/jhep11(2023)053
Andrea Fontanella, Juan Miguel Nieto García
A bstract We discuss the non-relativistic limit of string theory in AdS 5 ×S 5 for different choices of embedding coordinates. We show that, if we consider Cartesian coordinates, the action of fluctuations around the twisted BMN-like string found in arXiv:2109.13240 in uniform light-cone gauge becomes the one of free fields at large string tension and large AdS 5 radius.
讨论了ad5 ×S 5中不同嵌入坐标选择下弦理论的非相对论性极限。我们证明,如果考虑笛卡尔坐标,在均匀光锥规范中arXiv:2109.13240中发现的扭曲的BMN-like弦周围的波动作用变成了大弦张力和大ad5半径下的自由场作用。
{"title":"Light-cone gauge in non-relativistic AdS5×S5 string theory","authors":"Andrea Fontanella, Juan Miguel Nieto García","doi":"10.1007/jhep11(2023)053","DOIUrl":"https://doi.org/10.1007/jhep11(2023)053","url":null,"abstract":"A bstract We discuss the non-relativistic limit of string theory in AdS 5 ×S 5 for different choices of embedding coordinates. We show that, if we consider Cartesian coordinates, the action of fluctuations around the twisted BMN-like string found in arXiv:2109.13240 in uniform light-cone gauge becomes the one of free fields at large string tension and large AdS 5 radius.","PeriodicalId":48906,"journal":{"name":"Journal of High Energy Physics","volume":" 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135292459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Generalization of instanton-induced inflation and dynamical compactification 瞬态诱导暴胀和动态紧化的推广
1区 物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS Pub Date : 2023-11-09 DOI: 10.1007/jhep11(2023)050
Jeongwon Ho, Kyung Kiu Kim, Seoktae Koh, Hyun Seok Yang
A bstract It was shown that Yang-Mills instantons on an internal space can trigger the expansion of our four-dimensional universe as well as the dynamical compactification of the internal space. We generalize the instanton-induced inflation and dynamical compactification to general Einstein manifolds with positive curvature and also to the FLRW metric with spatial curvature. We explicitly construct Yang-Mills instantons on all Einstein manifolds under consideration and find that the homogeneous and isotropic universe is allowed only if the internal space is homogeneous. We then consider the FLRW metric with spatial curvature as a solution of the eight-dimensional Einstein-Yang-Mills theory. We find that open universe ( k = − 1) admits bouncing solutions unlike the other cases ( k = 0 , +1).
研究表明,内部空间上的杨-米尔斯瞬子可以引发四维宇宙的膨胀以及内部空间的动态紧化。我们将瞬致膨胀和动态紧化推广到具有正曲率的一般爱因斯坦流形和具有空间曲率的FLRW度规。我们在考虑的所有爱因斯坦流形上显式地构造Yang-Mills瞬子,并发现只有当内部空间是齐次的时候,才允许存在齐次和各向同性的宇宙。然后我们考虑带空间曲率的FLRW度规作为八维爱因斯坦-杨-米尔斯理论的一个解。我们发现开放宇宙(k = - 1)与其他情况(k = 0, +1)不同,存在弹跳解。
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引用次数: 1
Adding fluxes to consistent truncations: IIB supergravity on AdS3 × S3 × S3 × S1 向一致截断添加通量:AdS3 × S3 × S3 × S1上的IIB超重力
1区 物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS Pub Date : 2023-11-09 DOI: 10.1007/jhep11(2023)049
Camille Eloy, Michele Galli, Emanuel Malek
A bstract We use E 8(8) Exceptional Field Theory to construct the consistent truncation of IIB supergravity on S 3 × S 3 × S 1 to maximal 3-dimensional $$ mathcal{N} $$ N = 16 gauged supergravity containing the $$ mathcal{N} $$ N = (4, 4) AdS 3 vacuum. We explain how to achieve this by adding a 7-form flux to the S 1 reduction of the dyonic E 7(7) truncation on S 3 × S 3 previously constructed in the literature. Our truncation Ansatz includes, in addition to the $$ mathcal{N} $$ N = (4, 4) vacuum, a host of moduli breaking some or all of the supersymmetries. We explicitly construct the uplift of a subset of these to construct new supersymmetric and non-supersymmetric AdS 3 vacua of IIB string theory, which include a range of perturbatively stable non-supersymmetric 10-d vacua. Moreover, we show how the supersymmetric direction of the moduli space of AdS 3 vacua of six-dimensional gauged supergravity studied in [1] is compactified upon lifting to 10 dimensions, and find evidence of T-duality playing a role in global aspects of the moduli space. Along the way, we also derive the form of 3-dimensional $$ mathcal{N} $$ N = 16 gauged supergravity in terms of the embedding tensor and rule out a 10-/11-dimensional origin of some 3-dimensional gauged supergravities.
利用e8(8)例外场论构造了s3 × s3 × s1上IIB超重力到包含$$ mathcal{N} $$ N = (4,4) ad3真空的最大三维$$ mathcal{N} $$ N = 16测量超重力的一致截断。我们解释了如何通过在文献中先前构建的s3 × s3上的动态e7(7)截断的s1还原中添加7-form通量来实现这一点。除了$$ mathcal{N} $$ N =(4,4)真空外,我们的截断Ansatz还包括一系列模,这些模打破了部分或全部超对称性。我们显式构造了其中一个子集的隆起,以构造新的IIB弦理论的超对称和非超对称ad3真空,其中包括一系列微扰稳定的非超对称10维真空。此外,我们展示了[1]研究的六维规范超重力的ad3真空的模空间的超对称方向如何在提升到10维时被紧化,并找到了t对偶性在模空间的全局方面发挥作用的证据。在此过程中,我们还根据嵌入张量导出了三维$$ mathcal{N} $$ N = 16测量超重力的形式,并排除了一些三维测量超重力的10 /11维起源。
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引用次数: 1
期刊
Journal of High Energy Physics
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