Journal of High Energy Physics最新文献_第10页

Finite temperature Casimir effect for a spinor field in cosmic dispiration spacetime 宇宙耗散时空中旋量场的有限温度卡西米尔效应

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-09-01 DOI: 10.1007/JHEP09(2025)007

Joás Venâncio, Herondy Mota, Azadeh Mohammadi

{"title":"Finite temperature Casimir effect for a spinor field in cosmic dispiration spacetime","authors":"Joás Venâncio, Herondy Mota, Azadeh Mohammadi","doi":"10.1007/JHEP09(2025)007","DOIUrl":"10.1007/JHEP09(2025)007","url":null,"abstract":"This study explores the finite temperature Casimir effect for a massive spinor field in cosmic dispiration spacetime, formed by the combination of a cosmic string and a screw dislocation, using the generalized zeta function regularization method. First, we examine the cosmic string spacetime with a quasi-antiperiodic boundary condition, where the Casimir energy and its corrections depend on two nonzero heat kernel coefficients, one associated with the Euclidean divergence and the other with the nontrivial topology, both vanishing when renormalized. Interestingly, for specific choice of parameters the quasi-antiperiodicity effect can entirely cancel out the topological contribution, leaving only the Euclidean divergence. We then extend this analysis to cosmic dispiration spacetime. This configuration alters the spacetime topology, modifying the structure of the heat kernel coefficient related to the new nontrivial topology. In this case, the renormalized Casimir energy density can take positive or negative values and decreases exponentially as the field mass increases. Additionally, we examine the asymptotic behavior of the renormalized temperature correction term in the massless regime, showing that the spinor vacuum free energy vanishes at very high temperatures. At very low temperatures, it is dominated by the zero-temperature Casimir energy density.","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 9","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP09(2025)007.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144927113","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

Fuzzy axions and associated relics 模糊轴子及其相关遗迹

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-09-01 DOI: 10.1007/JHEP09(2025)016

Elijah Sheridan, Federico Carta, Naomi Gendler, Mudit Jain, David J. E. Marsh, Liam McAllister, Nicole Righi, Keir K. Rogers, Andreas Schachner

{"title":"Fuzzy axions and associated relics","authors":"Elijah Sheridan, Federico Carta, Naomi Gendler, Mudit Jain, David J. E. Marsh, Liam McAllister, Nicole Righi, Keir K. Rogers, Andreas Schachner","doi":"10.1007/JHEP09(2025)016","DOIUrl":"10.1007/JHEP09(2025)016","url":null,"abstract":"We study fuzzy axion dark matter in type IIB string theory, for axions descending from the Ramond-Ramond four-form in compactifications on orientifolds of Calabi-Yau hypersurfaces. Such models can be tested by cosmological measurements if a significant relic abundance of fuzzy dark matter arises, which we argue is most common in models with small numbers of axions. We construct a topologically exhaustive ensemble of more than 350,000 Calabi-Yau compactifications yielding up to seven axions, and in this setting we perform a systematic analysis of misalignment production of fuzzy dark matter. In typical regions of moduli space, the fuzzy axion, the QCD axion, and other axions have comparable decay constants of fa ≈ 1016 GeV. We find that overproduction of heavier axions is problematic, except at special loci in moduli space where decay constant hierarchies can occur: without a contrived reheating epoch, it is necessary to fine-tune initial displacements. The resulting dark matter is typically a mix of fuzzy axions and heavier axions, including the QCD axion. Dark photons are typically present as a consequence of the orientifold projection. We examine the signatures of these models by simulating halos with multiple fuzzy axions, and by computing new cosmological constraints on ultralight axions and dark radiation. We also give evidence that cosmic birefringence is possible in this setting. Our findings determine the phenomenological correlates of fuzzy axion dark matter in a corner of the landscape.","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 9","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP09(2025)016.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144934593","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

Warming up the fibres 加热纤维

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-09-01 DOI: 10.1007/JHEP09(2025)020

Dibya Chakraborty, Rudnei O. Ramos

{"title":"Warming up the fibres","authors":"Dibya Chakraborty, Rudnei O. Ramos","doi":"10.1007/JHEP09(2025)020","DOIUrl":"10.1007/JHEP09(2025)020","url":null,"abstract":"Fibre inflationary models are constructed in type-IIB string flux compactification. These models have been shown to be in agreement with the cosmological observations under appropriate choices of parameters, which originate from their string theory construction. In the present work, we embed such models, originally studied in the cold inflation picture, in the context of warm inflation. We study the viability of different fibre inflation potentials in both strong and weak dissipative regime of warm inflation. In fibre inflation, the inflaton is a four-dimensional complex manifold — a fibre of a K3 fibered Calabi-Yau. The potential in this case is generated by an interplay of various perturbative and non-perturbative corrections. The former type of corrections consists of leading-order α′3-term, higher derivative F4-correction, and various string loop corrections of KK, log-loop and winding type. Depending on the balance between several corrections, we present four different fibre inflationary potentials and show that the warm inflationary pictures for all of them can successfully fall in the viable window from both Planck and recent Atacama Cosmology Telescope (ACT) data. We show that warm inflation makes it possible to extend the range of parameters of applicability of these models. Our results also indicate that with the help of a large dissipation ratio, one can achieve a sub-Planckian field excursion, although, this runs on the possibility of moving away from the perturbative control of low-energy four-dimensional supergravity theory.","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 9","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP09(2025)020.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144927119","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

Monopoles, Dirac strings and generalised symmetries 单极子，狄拉克弦和广义对称性

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-09-01 DOI: 10.1007/JHEP09(2025)019

C. M. Hull

引用次数: 0

Thermodynamics of integrable ( mathcal{N} ) = 2 theories, squared 可积热力学( mathcal{N} ) = 2个理论的平方

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-09-01 DOI: 10.1007/JHEP09(2025)018

Xavier Kervyn, Davide Polvara, Alessandro Sfondrini

引用次数: 0

Quantum properties of H → VV*: precise predictions in the SM and sensitivity to new physics H→VV*的量子特性：SM中的精确预测和对新物理的敏感性

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-09-01 DOI: 10.1007/JHEP09(2025)013

Morgan Del Gratta, Federica Fabbri, Priyanka Lamba, Fabio Maltoni, Davide Pagani

{"title":"Quantum properties of H → VV*: precise predictions in the SM and sensitivity to new physics","authors":"Morgan Del Gratta, Federica Fabbri, Priyanka Lamba, Fabio Maltoni, Davide Pagani","doi":"10.1007/JHEP09(2025)013","DOIUrl":"10.1007/JHEP09(2025)013","url":null,"abstract":"We study the quantum properties of the Higgs-boson decays into four fermions via two vector bosons (H → VV* → 4f). In particular, we focus on the case of two different-flavour lepton pairs (H → ZZ* → μ+μ−e+e−). We compute the quantum-information observables for the corresponding two-qutrit system (ZZ) at next-to-leading order electroweak (NLO EW) accuracy in the SM. We find that NLO EW corrections lead to giant (order 1) effects in some specific cases, significantly altering the extraction of observables quantifying the quantum correlations. We identify observables that are robust and can be used to extract reliable information. Finally, we discuss possible new physics (NP) effects, parametrised via an effective-field-theory approach. We show how quantum observables can increase the sensitivity to NP also for the process considered in this study.","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 9","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP09(2025)013.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144927162","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

RI-(S)MOM to ( overline{textrm{MS}} ) conversion for BK at two-loop order RI-(S)MOM到( overline{textrm{MS}} )在双环阶的BK转换

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-09-01 DOI: 10.1007/JHEP09(2025)011

Martin Gorbahn, Sebastian Jäger, Sandra Kvedaraitė

{"title":"RI-(S)MOM to ( overline{textrm{MS}} ) conversion for BK at two-loop order","authors":"Martin Gorbahn, Sebastian Jäger, Sandra Kvedaraitė","doi":"10.1007/JHEP09(2025)011","DOIUrl":"10.1007/JHEP09(2025)011","url":null,"abstract":"The Kaon bag parameter ( {hat{B}}_K ) plays a critical role in constraining the parameters of the CKM matrix and in probing physics beyond the Standard Model. In this work, we improve the precision of ( {hat{B}}_K ) to next-to-next-to-leading order (NNLO) and provide world averages for both 3- and 4-flavour theories. In the course of this, as our main technical development, we carry out the two-loop matching between the RI-(S)MOM and ( overline{textrm{MS}} ) schemes. Our world averages combine all available lattice data, including conversion between the 3- and 4-flavour theories as appropriate. We obtain the result ( {hat{B}}_K^{left(f=3right)}=0.7627(60) ), which comprises the complete set of 3- and 4-flavour lattice results and can be used directly in phenomenological applications. The error is dominated by lattice uncertainties and missing higher-order corrections (residual scale dependence). Our averages include a PDG rescaling factor of 1.28 reflecting a mild tension among the lattice inputs after inclusion of NNLO corrections in the scheme conversion and matching across flavour thresholds. Our averages imply an updated value |ϵK| = 2.171(65)pert.(71)non-pert.(153)param. × 10−3. We briefly discuss applications of our results to D-meson mixing.","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 9","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP09(2025)011.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144927111","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

Heterotic string sigma models: discrete light cone quantization and its current-current deformation 异质弦σ模型：离散光锥量化及其电流-电流变形

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-09-01 DOI: 10.1007/JHEP09(2025)021

Eric A. Bergshoeff, Kevin T. Grosvenor, Luca Romano, Ziqi Yan

引用次数: 0

Symmetry transmutation and anomaly matching 对称嬗变与异常匹配

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-09-01 DOI: 10.1007/JHEP09(2025)014

Nathan Seiberg, Sahand Seifnashri

引用次数: 0

Interacting massive/massless continuous-spin fields and integer-spin fields 相互作用的有质量/无质量连续自旋场和整数自旋场

IF 5.5 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-09-01 DOI: 10.1007/JHEP09(2025)002

R. R. Metsaev

{"title":"Interacting massive/massless continuous-spin fields and integer-spin fields","authors":"R. R. Metsaev","doi":"10.1007/JHEP09(2025)002","DOIUrl":"10.1007/JHEP09(2025)002","url":null,"abstract":"In the framework of light-cone gauge approach, interacting continuous-spin fields and integer-spin fields propagating in flat space are studied. The continuous-spin fields are considered by using a light-cone gauge vector superspace formulation. Description of massive continuous-spin fields associated with the principal, complementary and discrete series is presented. For the massive continuous-spin fields of the principal and complementary series and massless continuous-spin fields, all parity-even cubic vertices realized as functions on the light-cone gauge vector superspace are obtained. Cubic vertices for a cross-interaction of massive/massless continuous spin fields and massive/massless integer-spin fields are also derived. These results for cubic vertices are complete for the dimensions of space-time greater than four. The use of the light-cone gauge vector superspace formulation considerably simplifies the cubic vertices as compared to the ones of oscillator formulation. Some cubic vertices realized as distributions are also found. Map between the oscillator formulation and the vector superspace formulation of the continuous-spin fields is explicitly described. An equivalence of the light-cone gauge and Lorentz covariant formulations of the free continuous-spin fields is also demonstrated.","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 9","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP09(2025)002.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144927163","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