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We propose a model for a superconductor where both spin-singlet and chiral triplet pairing amplitudes can coexist. By solving the Bogoliubov-de Gennes equations with a general pair potential that accounts for both spin states we study…

Mesoscale and Nanoscale Physics · Physics 2014-10-06 Pablo Burset , Felix Keidel , Yukio Tanaka , Naoto Nagaosa , Björn Trauzettel

We study the superfluid properties of two-dimensional spin-population-imbalanced Fermi gases to explore the interplay between the Berezinskii-Kosterlitz-Thouless (BKT) phase transition and the possible instability towards the Fulde-Ferrell…

Quantum Gases · Physics 2014-01-14 Shaoyu Yin , J. -P. Martikainen , P. Törmä

The superfluid to normal fluid transition of dipolar bosons in two dimensions is studied throughout the whole density range using path integral Monte Carlo simulations and summarized in the phase diagram. While at low densities, we find…

Atomic Physics · Physics 2015-05-18 A. V. Filinov , N. V. Prokof'ev , M. Bonitz

Based on the rapid experimental developments of circuit QED, we propose a feasible scheme to simulate a spin-boson model with the superconducting circuits, which can be used to detect quantum Kosterlitz-Thouless (KT) phase transition. We…

Quantum Physics · Physics 2016-02-11 Long-Bao Yu , Ning-Hua Tong , Zheng-Yuan Xue , Z. D. Wang , Shi-Liang Zhu

We reveal the key role of the $d$-wave symmetry of the superconducting gap in strongly coupled two-dimensional superconductors in determining the properties of the Berezinskii-Kosterlitz-Thouless (BKT) transition, associated with a sizable…

Superconductivity · Physics 2025-11-21 Sathish Kumar Paramasivam , Andrea Perali , Milorad V. Milošević

We determine the finite temperature phase diagram of two dimensional bosons with two hyperfine (pseudo-spin) states coupled via Rashba-Dresselhaus spin-orbit interaction using classical field Monte Carlo calculations. For anisotropic…

Quantum Gases · Physics 2017-05-17 Eiji Kawasaki , Markus Holzmann

We investigate superfluidity of bosons in gapped topological bands and discover a new phase that has no counterparts in the previous literature. This phase is characterized by a highly unconventional modulation of the order parameter,…

Quantum Gases · Physics 2023-07-19 Ilya Lukin , Andrii Sotnikov , Alexander Kruchkov

We discuss a detailed phase diagram and other microscopic characteristics on the applied magnetic field - temperature (H_a-T) plane for a simple model of correlated fluid represented by a two-dimensional (2D) gas of heavy quasiparticles…

Superconductivity · Physics 2011-09-09 Jan Kaczmarczyk , Jozef Spalek

We study nonlinear fluctuating hydrodynamic theories with charge and energy conservation in and above two dimensions that describe the large-scale behavior of the Hamiltonian XY model in the disordered and ordered phases. Using…

Statistical Mechanics · Physics 2025-02-18 Ken Hiura

This is a Reply to the Comment from F. Cinti and M. Boninsegni on our recent work on the Berezinskii-Kosterlitz-Thouless (BKT) phase transition in a two-dimensional dipolar system [R.Bomb\'in, F. Mazzanti and J. Boronat, Physical Review A…

Quantum Gases · Physics 2020-10-21 Raúl Bombín , Ferran Mazzanti , Jordi Boronat

We show that gapped Graphene, with a local constraint that current arising from the two valley fermions are exactly equal, shows a non-BCS type superconductivity. Unlike the conventional mechanisms, this superconductivity phenomenon does…

Superconductivity · Physics 2011-07-28 Vivek M. Vyas , Prasanta K. Panigrahi

We study the 2d phase transition of a driven-dissipative system of exciton-polaritons under non-resonant pumping. Stochastic calculations are used to investigate the Berezinskii-Kosterlitz-Thouless-like phase diagram for experimentally…

Mesoscale and Nanoscale Physics · Physics 2021-03-23 P. Comaron , I. Carusotto , M. H. Szymanska , N. P. Proukakis

This paper develops and implements the stochastic projected Gross-Pitaevskii equation for spin-1 Bose gases, addressing key considerations for numerical simulations. As an application of the theory we explore equilibrium phases in a…

Quantum Gases · Physics 2025-08-19 Andrew P. C. Underwood , P. B. Blakie

The study of Berezinskii-Kosterlitz-Thouless transitions in clean, layered two-dimensional superconductors promises to provide insight into a host of novel phenomena like re-entrant vortex-dynamics, underlying unconventional metallic…

Superconductivity · Physics 2023-01-10 Prakiran Baidya , Vivas Bagwe , Pratap Raychaudhuri , Aveek Bid

Motivated by recent progress on synthesizing two-dimensional magnetic van der Waals systems, we propose a setup for detecting the topological Berezinskii-Kosterlitz-Thouless (BKT) phase transition in spin-transport experiments on such…

Mesoscale and Nanoscale Physics · Physics 2020-12-08 Roberto E. Troncoso , Arne Brataas , Asle Sudbø

We analyse a $2+1$ dimensional model with charged, relativistic fermions interacting through a four-Fermi term. Taking advantage of its large-$N$ renormalizability, the various phases of this model are studied at finite temperature and…

High Energy Physics - Theory · Physics 2010-11-01 R. MacKenzie , P. K. Panigrahi , S. Sakhi

The $s=1$ spinor Bose condensate at zero temperature supports ferromagnetic and polar phases that combine magnetic and superfluid ordering. We analyze the topological defects of the polar condensate, correcting previous studies, and show…

Other Condensed Matter · Physics 2009-11-11 Subroto Mukerjee , Cenke Xu , J. E. Moore

We study the phase fluctuations in the normal state of generic two-dimensional superconducting systems with s-wave pairing. The effect of phase fluctuations of the pairing fields can be dealt with perturbatively using disorder averaging,…

Superconductivity · Physics 2023-06-02 Xu-Cheng Wang , Yang Qi

Intriguing phases may emerge when two-dimensional systems are coupled in a bilayer configuration. In particular, a Berezinskii-Kosterlitz-Thouless (BKT) paired superfluid phase was predicted and claimed to be numerically observed in a…

Statistical Mechanics · Physics 2025-11-14 Tianning Xiao , Youjin Deng , Xiao-Yu Dong

We investigate two equivalent, capacitively coupled semiconducting quantum dots, each coupled to its own lead, in a regime where there are two electrons on the double dot. With increasing interdot coupling a rich range of behavior is…

Strongly Correlated Electrons · Physics 2007-05-23 Martin R. Galpin , David E. Logan , H. R. Krishnamurthy