Physical Review最新文献

Radiation of optical angular momentum from a dipole source in a magneto-birefringent disordered environment 磁双折射无序环境中偶极子源的光学角动量辐射

Physical Review Pub Date : 2023-11-15 DOI: 10.1103/physreva.108.053713

R. Le Fournis, B. A. van Tiggelen

引用次数: 0

Analysis of loss correction with the Gottesman-Kitaev-Preskill code Gottesman-Kitaev-Preskill码的损耗校正分析

Physical Review Pub Date : 2023-11-15 DOI: 10.1103/physreva.108.052413

Jacob Hastrup, Ulrik L. Andersen

引用次数: 1

Supersonic friction of a black hole traversing a self-interacting scalar dark matter cloud 黑洞穿越自相互作用标量暗物质云的超音速摩擦

Physical Review Pub Date : 2023-11-15 DOI: 10.1103/physrevd.108.103517

Alexis Boudon, Philippe Brax, Patrick Valageas

{"title":"Supersonic friction of a black hole traversing a self-interacting scalar dark matter cloud","authors":"Alexis Boudon, Philippe Brax, Patrick Valageas","doi":"10.1103/physrevd.108.103517","DOIUrl":"https://doi.org/10.1103/physrevd.108.103517","url":null,"abstract":"Black holes (BHs) traversing a dark matter cloud made out of a self-interacting scalar soliton are slowed down by two complementary effects. At low subsonic speeds, the BH accretes dark matter, and this is the only source of dragging along its motion, if we neglect the backreaction of the cloud's self-gravity. The situation changes at larger supersonic speeds where a shock appears. This leads to the emergence of an additional friction term, associated with the gravitational and scalar pressure interactions and with the wake behind the moving BH. This is a long distance effect that can be captured by the hydrodynamical regime of the scalar flow far away from the BH. This dynamical friction term has the same form as the celebrated Chandrasekhar collisionless result, albeit with a well-defined Coulomb logarithm and a prefactor that is smaller by a factor $2/3$. The infrared cutoff is naturally provided by the size of the scalar cloud, which is set by the scalar mass and coupling, whilst the ultraviolet behavior corresponds to the distance from the BH where the velocity field is significantly perturbed by the BH, which is determined by pressure effects. As a result, supersonic BHs are slowed down by both the accretion drag and the dynamical friction. This effect will be potentially detectable by future gravitational wave experiments as it influences the phase of the gravitational wave signal from inspiralling binaries.","PeriodicalId":20121,"journal":{"name":"Physical Review","volume":"3 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136227239","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: 3

Charging batteries with quantum squeezing 用量子压缩技术给电池充电

Physical Review Pub Date : 2023-11-14 DOI: 10.1103/physreva.108.052213

Federico Centrone, Luca Mancino, Mauro Paternostro

引用次数: 6

Spontaneous emergence of two-dimensional quasibreathers in a nonlinear Schrödinger equation with nonlocal derivatives 具有非局部导数的非线性Schrödinger方程中二维拟呼吸体的自发出现

Physical Review Pub Date : 2023-11-14 DOI: 10.1103/physreve.108.054215

Alexander Hrabski, Yulin Pan

引用次数: 0

Using models with static quantum many-body scars to generate time-crystalline behavior under periodic driving 利用静态量子多体伤痕模型生成周期驱动下的时晶行为

Physical Review Pub Date : 2023-11-14 DOI: 10.1103/physrevb.108.205129

Wentai Deng, Zhi-Cheng Yang

{"title":"Using models with static quantum many-body scars to generate time-crystalline behavior under periodic driving","authors":"Wentai Deng, Zhi-Cheng Yang","doi":"10.1103/physrevb.108.205129","DOIUrl":"https://doi.org/10.1103/physrevb.108.205129","url":null,"abstract":"We propose a scheme that generates period-doubled responses via periodically driving certain Hamiltonians hosting quantum many-body scars, akin to recent experimental observations in driven Rydberg atom arrays. Our construction takes advantage of an su(2) spectrum generating algebra associated with the static quantum-scarred Hamiltonian, which enacts a $ensuremath{pi}$ rotation within the scar subspace after one period of time evolution with appropriately chosen driving parameters. This yields period-doubled (subharmonic) responses in local observables for any choice of initial state residing in the scar subspace. The quasienergy spectrum features atypical $ensuremath{pi}$-paired eigenstates embedded in an otherwise fully thermal spectrum. The protocol requires neither a large driving frequency nor a large driving amplitude and is thus distinct from the prethermalization physics in previous investigations of the driven PXP model. We demonstrate our scheme using several spin-1/2 and spin-1 quantum scarred models possessing an exact su(2) spectrum generating algebra, as well as a symmetry-deformed PXP model, where the su(2) algebra is only approximate. Our results extend the class of models hosting quantum many-body scars that can be leveraged to yield time-crystalline behaviors under periodic driving.","PeriodicalId":20121,"journal":{"name":"Physical Review","volume":"44 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134900787","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: 1

Magnetic proximity effects in antiferromagnetic composite thin films: Roles of triggering perpendicular magnetic anisotropy 反铁磁复合薄膜中的磁邻近效应:引发垂直磁各向异性的作用

Physical Review Pub Date : 2023-11-14 DOI: 10.1103/physrevb.108.184412

Bo-Yao Wang, Tzu-Hsin Li, Bo-Xiang Liao, Chung-Hsuan Hsiao, Li-Han Chang, Ming-Shian Tsai, Tzu-Hung Chuang, Der-Hsin Wei

引用次数: 0

Mechanism for π phase shifts in Little-Parks experiments: Application to 4Hb−TaS2 and to 2H Little-Parks实验中π相移的机理:在4Hb−TaS2和2H</mml:mi中的应用

Physical Review Pub Date : 2023-11-14 DOI: 10.1103/physrevb.108.l180505

Mark H. Fischer, Patrick A. Lee, Jonathan Ruhman

{"title":"Mechanism for π phase shifts in Little-Parks experiments: Application to 4Hb−TaS2 and to 2H</mml:mi…","authors":"Mark H. Fischer, Patrick A. Lee, Jonathan Ruhman","doi":"10.1103/physrevb.108.l180505","DOIUrl":"https://doi.org/10.1103/physrevb.108.l180505","url":null,"abstract":"Recently, unusual $ensuremath{pi}$ phase shifts in Little-Parks experiments performed on two systems derived from the layered superconductor $2Htext{ensuremath{-}}{mathrm{TaS}}_{2}$ were reported. These systems share the common feature that additional layers have been inserted between the $1Htext{ensuremath{-}}{mathrm{TaS}}_{2}$ layers. In both cases, the $ensuremath{pi}$ phase shift has been interpreted as evidence for the emergence of exotic superconductivity in the $1H$ layers. Here, we propose an alternative explanation assuming that superconductivity in the individual $1H$ layers is of conventional $s$-wave nature derived from the parent $2Htext{ensuremath{-}}{mathrm{TaS}}_{2}$. We show that a negative Josephson coupling between otherwise decoupled neighboring $1H$ layers can explain the observations. Furthermore, we find that the negative coupling can arise naturally assuming a tunneling barrier containing paramagnetic impurities. An important ingredient is the suppression of non-spin-flip tunneling due to spin-momentum locking of Ising type in a single $1H$ layer together with the inversion symmetry of the double layer. In the exotic superconductivity scenario, it is challenging to explain why the critical temperature is almost the same as in the parent material and, in the $4mathit{Hb}$ case, the superconductivity's robustness to disorder. Both are nonissues in our picture, which also exposes the common features that are special in these two systems.","PeriodicalId":20121,"journal":{"name":"Physical Review","volume":"43 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134900795","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

Quantum phases in the honeycomb-lattice J1 – J3 ferro-antiferromagnetic model 蜂巢晶格 J1 - J3 铁反铁磁模型中的量子相位

Physical Review Pub Date : 2023-11-14 DOI: 10.1103/physrevb.108.l180406

Shengtao Jiang, Steven R. White, A. L. Chernyshev

引用次数: 0

Diversity of radial spin textures in chiral materials 手性材料中径向自旋织构的多样性

Physical Review Pub Date : 2023-11-14 DOI: 10.1103/physrevb.108.l201114

Daniel Gosálbez-Martínez, Alberto Crepaldi, Oleg V. Yazyev

引用次数: 1