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We study the effective dynamics of ferromagnetic spin chains in presence of long-range interactions. We consider the Heisenberg Hamiltonian in one dimension for which the spins are coupled through power-law long-range exchange interactions…

We find a series of topological phase transitions of increasing order, beyond the more standard second-order phase transition in a one-dimensional topological superconductor. The jumps in the order of the transitions depend on the range of…

统计力学 · 物理学 2018-04-04 P. Cats , A. Quelle , O. Viyuela , M. A. Martin-Delgado , C. Morais Smith

A one dimensional stochastic exclusion process with two species of particles, $+$ and $-$, is studied where density of each species can fluctuate but the total particle density is conserved. From the exact stationary state weights we show…

统计力学 · 物理学 2017-01-10 Urna Basu

We study a holographic model realizing an "antiferromagnetic" phase in which a global SU(2) symmetry representing spin is broken down to a U(1) by the presence of a finite electric charge density. This involves the condensation of a neutral…

高能物理 - 理论 · 物理学 2014-11-20 Nabil Iqbal , Hong Liu , Márk Mezei , Qimiao Si

We numerically examine the effect of thermal fluctuations on a first-order phase transition in 2+1 dimensions. By focusing on the expansion of a single bubble we are able to calculate changes in the bubble wall's velocity as well as changes…

高能物理 - 唯象学 · 物理学 2009-10-28 Mark Abney

We analyze a model of dynamically broken topcolor in the limit in which the number of colors is large. We show that the second order nature of the phase transition, necessary for the success of topcolor models, passes the nontrivial check…

高能物理 - 唯象学 · 物理学 2007-05-23 Hael Collins , Aaron K. Grant , Howard Georgi

We present a holographic construction of the large-N Bose-Hubbard model. The model is based on Maxwell fields coupled to charged scalar fields on the AdS2 hard wall. We realize the lobe-shaped phase structure of the Bose-Hubbard model and…

高能物理 - 理论 · 物理学 2016-08-08 Mitsutoshi Fujita , Sarah Harrison , Andreas Karch , Rene Meyer , Natalie M. Paquette

We study the influence of nonlinear terms quartic of the charged fields, which do not change the critical points of single condensate solutions, on the phase structure of a holographic model with multi-condensate in probe limit. We include…

高能物理 - 理论 · 物理学 2022-03-14 Xing-Kun Zhang , Chuan-Yin Xia , Zhang-Yu Nie , Hui Zeng

We study general models for holographic superconductors in Einstein-Gauss-Bonnet gravity. We find that different values of Gauss-Bonnet correction term and model parameters can determine the order of phase transitions and critical exponents…

高能物理 - 理论 · 物理学 2015-03-17 Qiyuan Pan , Bin Wang

We study the breaking of an Abelian symmetry close to the horizon of an uncharged rotating Anti-de Sitter black string in 3+1 dimensions. The boundary theory living on R^2 x S^1 has no rotation, but a magnetic field that is aligned with the…

高能物理 - 理论 · 物理学 2014-11-21 Yves Brihaye , Betti Hartmann

We use two Quantum Monte Carlo algorithms to map out the phase diagram of the two-dimensional hardcore boson Hubbard model with near ($V_1$) and next near ($V_2$) neighbor repulsion. At half filling we find three phases: Superfluid (SF),…

超导电性 · 物理学 2007-05-23 F. Hebert , G. G. Batrouni , R. T. Scalettar , G. Schmid , M. Troyer , A. Dorneich

Extending investigations of Antman & Malek-Madani, Schecter & Shearer, Slemrod, Barker & Lewicka & Zumbrun, and others, we investigate phase-transitional elasticity models of strain-gradient effect. We prove the existence of non-constant…

偏微分方程分析 · 数学 2012-10-25 Jinghua Yao

Disorder can localize the eigenstates of one-dimensional non-Hermitian systems, leading to an Anderson transition with a critical exponent of 1. We show that, due to the lack of energy conservation, the dynamics of individual, real-space…

介观与纳米尺度物理 · 物理学 2024-05-08 Helene Spring , Viktor Könye , Fabian A. Gerritsma , Ion Cosma Fulga , Anton R. Akhmerov

Double holography has been proved to be a powerful method in comprehending the spacetime entanglement. In this paper we investigate the doubly holographic construction in ${\mathrm{dS_{2}} }$ spacetime. We find that in this model there…

高能物理 - 理论 · 物理学 2025-02-13 Wen-Hao Jiang , Cheng Peng , Yun-Song Piao

The latest trend in studies of modern electronically and/or optically active materials is to provoke phase transformations induced by high electric fields or by short (femtosecond) powerful optical pulses. The systems of choice are…

强关联电子 · 物理学 2016-09-19 P. Karpov , S. Brazovskii

We use holography to study the spinodal instability of a four-dimensional, strongly-coupled gauge theory with a first-order thermal phase transition. We place the theory on a cylinder in a set of homogeneous, unstable initial states. The…

高能物理 - 理论 · 物理学 2017-07-05 Maximilian Attems , Yago Bea , Jorge Casalderrey-Solana , David Mateos , Miquel Triana , Miguel Zilhao

In this paper we consider an extension of the Standard Model(SM) with additional gauge singlets which exhibits a strong first order phase transition. Due to this first order phase transition in the early universe gravitational waves are…

高能物理 - 唯象学 · 物理学 2018-12-05 Mina Saeedhoseini , Ali Tofighi

We construct and analyze a phase diagram of a self-interacting matrix field coupled to curvature of the non-commutative truncated Heisenberg space. The model reduces to the renormalizable Grosse-Wulkenhaar model in an infinite matrix size…

高能物理 - 理论 · 物理学 2021-04-06 Dragan Prekrat , Kristina Neli Todorović-Vasović , Dragana Ranković

We investigate the strongly first-order electroweak phase transition using an effective field theoretical approach. The standard effective field theory with finite number truncation of higher dimensional operators fails in the typical…

高能物理 - 唯象学 · 物理学 2022-06-22 Shinya Kanemura , Ryo Nagai , Masanori Tanaka

A phase separation in a spatially heterogeneous environment is closely related to intracellular science and material science. For the phase separation, initial heterogeneous perturbations play an important role in pattern formations. In…

统计力学 · 物理学 2024-08-30 Rikuya Ishikawa , Rei Kurita