SciPost Physics最新文献_第5页

Black hole mergers in holographic space time models of cosmology 宇宙学全息时空模型中的黑洞合并

IF 5.5 2区物理与天体物理

SciPost Physics Pub Date : 2024-08-22 DOI: 10.21468/scipostphyscore.7.3.057

Anish Suresh, Thomas Banks

引用次数: 0

Self-force framework for transition-to-plunge waveforms 从过渡到暴跌波形的自力框架

IF 5.5 2区物理与天体物理

SciPost Physics Pub Date : 2024-08-16 DOI: 10.21468/scipostphys.17.2.056

Lorenzo Küchler, Geoffrey Compère, Leanne Durkan, Adam Pound

{"title":"Self-force framework for transition-to-plunge waveforms","authors":"Lorenzo Küchler, Geoffrey Compère, Leanne Durkan, Adam Pound","doi":"10.21468/scipostphys.17.2.056","DOIUrl":"https://doi.org/10.21468/scipostphys.17.2.056","url":null,"abstract":"Compact binaries with asymmetric mass ratios are key expected sources for next-generation gravitational wave detectors. Gravitational self-force theory has been successful in producing post-adiabatic waveforms that describe the quasi-circular inspiral around a non-spinning black hole with sub-radian accuracy, in remarkable agreement with numerical relativity simulations. Current inspiral models, however, break down at the innermost stable circular orbit, missing part of the waveform as the secondary body transitions to a plunge into the black hole. In this work we derive the transition-to-plunge expansion within a multiscale framework and asymptotically match its early-time behaviour with the late inspiral. Our multiscale formulation facilitates rapid generation of waveforms: we build second post-leading transition-to-plunge waveforms, named 2PLT waveforms. Although our numerical results are limited to low perturbative orders, our framework contains the analytic tools for building higher-order waveforms consistent with post-adiabatic inspirals, once all the necessary numerical self-force data becomes available. We validate our framework by comparing against numerical relativity simulations, surrogate models and the effective one-body approach.","PeriodicalId":21682,"journal":{"name":"SciPost Physics","volume":"8 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 0

Anomalies, representations, and self-supervision 异常、表征和自我监督

IF 5.5 2区物理与天体物理

SciPost Physics Pub Date : 2024-08-16 DOI: 10.21468/scipostphyscore.7.3.056

Barry M. Dillon, Luigi Favaro, Friedrich Feiden, Tanmoy Modak, Tilman Plehn

引用次数: 0

Boundary vertex algebras for 3d $mathcal{N}=4$ rank-0 SCFTs 3d $mathcal{N}=4$ rank-0 SCFT 的边界顶点代数

IF 5.5 2区物理与天体物理

SciPost Physics Pub Date : 2024-08-16 DOI: 10.21468/scipostphys.17.2.057

Andrea E. V. Ferrari, Niklas Garner, Heeyeon Kim

{"title":"Boundary vertex algebras for 3d $mathcal{N}=4$ rank-0 SCFTs","authors":"Andrea E. V. Ferrari, Niklas Garner, Heeyeon Kim","doi":"10.21468/scipostphys.17.2.057","DOIUrl":"https://doi.org/10.21468/scipostphys.17.2.057","url":null,"abstract":"We initiate the study of boundary Vertex Operator Algebras (VOAs) of topologically twisted 3d $mathcal{N}=4$ rank-0 SCFTs. This is a recently introduced class of $mathcal{N}=4$ SCFTs that by definition have zero-dimensional Higgs and Coulomb branches. We briefly explain why it is reasonable to obtain rational VOAs at the boundary of their topological twists. When a rank-0 SCFT is realized as the IR fixed point of a $mathcal{N}=2$ Lagrangian theory, we propose a technique for the explicit construction of its topological twists and boundary VOAs based on deformations of the holomorphic-topological twist of the $mathcal{N}=2$ microscopic description. We apply this technique to the $B$ twist of a newly discovered family of 3d $mathcal{N}=4$ rank-0 SCFTs ${mathcal T}_r$ and argue that they admit the simple affine VOAs $L_r(mathfrak{osp}(1|2))$ at their boundary. In the simplest case, this leads to a novel level-rank duality between $L_1(mathfrak{osp}(1|2))$ and the minimal model $M(2,5)$. As an aside, we present a TQFT obtained by twisting a 3d $mathcal{N}=2$ QFT that admits the $M(3,4)$ minimal model as a boundary VOA and briefly comment on the classical freeness of VOAs at the boundary of 3d TQFTs.","PeriodicalId":21682,"journal":{"name":"SciPost Physics","volume":"38 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 0

Functional renormalization group for fermions on a one dimensional lattice at arbitrary filling 一维晶格上费米子任意填充的函数重正化群

IF 5.5 2区物理与天体物理

SciPost Physics Pub Date : 2024-08-15 DOI: 10.21468/scipostphys.17.2.054

Lucas Désoppi, Nicolas Dupuis, Claude Bourbonnais

引用次数: 0

Gaussian state approximation of quantum many-body scars 量子多体痕的高斯态近似

IF 5.5 2区物理与天体物理

SciPost Physics Pub Date : 2024-08-15 DOI: 10.21468/scipostphys.17.2.055

Wouter Buijsman, Yevgeny Bar Lev

引用次数: 0

Ambitions for theory in the physics of life 生命物理学理论的雄心壮志

IF 5.5 2区物理与天体物理

SciPost Physics Pub Date : 2024-08-15 DOI: 10.21468/scipostphyslectnotes.84

William Bialek

引用次数: 0

Quantum robustness of the toric code in a parallel field on the honeycomb and triangular lattice 蜂巢和三角晶格平行场中环形编码的量子稳健性

IF 5.5 2区物理与天体物理

SciPost Physics Pub Date : 2024-08-15 DOI: 10.21468/scipostphys.17.2.053

Viktor Kott, Matthias Mühlhauser, Jan Alexander Koziol, Kai Phillip Schmidt

{"title":"Quantum robustness of the toric code in a parallel field on the honeycomb and triangular lattice","authors":"Viktor Kott, Matthias Mühlhauser, Jan Alexander Koziol, Kai Phillip Schmidt","doi":"10.21468/scipostphys.17.2.053","DOIUrl":"https://doi.org/10.21468/scipostphys.17.2.053","url":null,"abstract":"We investigate the quantum robustness of the topological order in the toric code on the honeycomb lattice in the presence of a uniform parallel field. For a field in $z$-direction, the low-energy physics is in the flux-free sector and can be mapped to the transverse-field Ising model on the honeycomb lattice. One finds a second-order quantum phase transition in the 3D Ising$^star$ universality class for both signs of the field. The same is true for a postive field in $x$-direction where an analogue mapping in the charge-free sector yields a ferromagnetic transverse-field Ising model on the triangular lattice and the phase transition is still 3D Ising$^star$. In contrast, for negative $x$-field, the charge-free sector is mapped to the highly frustrated antiferromagnetic transverse-field Ising model on the triangular lattice which is known to host a quantum phase transition in the 3D XY$^star$ universality class. Further, the charge-free sector does not always contain the low-energy physics for negative $x$-fields and a first-order phase transition to the polarized phase in the charge-full sector takes place at larger negative field values. We quantify the location of this transition by comparing quantum Monte Carlo simulations and high-field series expansions. The full extension of the topological phase in the presence of $x$- and $z$-fields is determined by perturbative linked-cluster expansions using a full graph decomposition. Extrapolating the high-order series of the charge and the flux gap allows to estimate critical exponents of the gap closing. This analysis indicates that the topological order breaks down by critical lines of 3D Ising$^star$ and 3D XY$^star$ type with interesting potential multi-critical crossing points. All findings for the toric code on the honeycomb lattice can be transferred exactly to the toric code on the triangular lattice.","PeriodicalId":21682,"journal":{"name":"SciPost Physics","volume":"24 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 0

Constraints on the spectrum of field theories with non-integer $O(N)$ symmetry from quantum evanescence 量子衰减对具有非整数 $O(N)$ 对称性的场论谱的约束

IF 5.5 2区物理与天体物理

SciPost Physics Pub Date : 2024-08-14 DOI: 10.21468/scipostphyscore.7.3.055

Weiguang Cao, Xiaochuan Lu, Tom Melia

引用次数: 0

Localized dopant motion across the 2D Ising phase transition 跨越二维伊辛相变的局部掺杂运动

IF 5.5 2区物理与天体物理

SciPost Physics Pub Date : 2024-08-14 DOI: 10.21468/scipostphyscore.7.3.054

Kristian Knakkergaard Nielsen

{"title":"Localized dopant motion across the 2D Ising phase transition","authors":"Kristian Knakkergaard Nielsen","doi":"10.21468/scipostphyscore.7.3.054","DOIUrl":"https://doi.org/10.21468/scipostphyscore.7.3.054","url":null,"abstract":"I investigate the motion of a single hole in 2D spin lattices with square and triangular geometries. While the spins have nearest neighbor Ising spin couplings $J$, the hole is allowed to move only in 1D along a single line in the 2D lattice with nearest neighbor hopping amplitude $t$. The non-equilibrium hole dynamics is initialized by suddenly removing a single spin from the thermal Ising spin lattice. I find that for any nonzero spin coupling and temperature, the hole is localized. This is an extension of the thermally induced localization phenomenon [Phys. Rev. Res. 6, 023325 (2024)] to the case, where there is a phase transition to a long-range ordered ferromagnetic phase. The dynamics depends only on the ratio of the temperature to the spin coupling, $k_BT / |J|$, and on the ratio of the spin coupling to the hopping $J/t$. I characterize these dependencies in great detail. In particular, I find universal behavior at high temperatures, common features for the square and triangular lattices across the Curie temperatures for ferromagnetic interactions, and highly distinct behaviors for the two geometries in the presence of antiferromagnetic interactions due geometric frustration in the triangular lattice.","PeriodicalId":21682,"journal":{"name":"SciPost Physics","volume":"33 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 0