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We study finite-temperature properties of a two-dimensional superfluid made of ultracold alkali-metal atoms in the BCS-BEC crossover. We investigate the region below the critical temperature $T_{BKT}$ of the Berezinskii-Kosterlitz-Thouless…

Quantum Gases · Physics 2013-11-20 L. Salasnich , P. A. Marchetti , F. Toigo

A great step forward towards the understanding of high temperature superconductors are the variety of experimental results which have led to the wide-spread acceptance of the idea that a phase with a broken symmetry competes with…

Superconductivity · Physics 2015-06-05 Chandra M. Varma , Lijun Zhu

We describe the emergence of superfluid phases of ultracold dipolar fermions in optical lattices for two-dimensional systems. Considering the many-body screening of dipolar interactions at intermediate and larger filling factors, we show…

Quantum Gases · Physics 2014-10-14 Doga Murat Kurkcuoglu , Li Han , C. A. R. Sá de Melo

In the probe limit, we numerically construct a holographic p-wave superfluid model in the 4D and 5D AdS black holes coupled to a Maxwell-complex vector field. We find that, for the condensate with the fixed superfluid velocity, the results…

High Energy Physics - Theory · Physics 2014-12-15 Ya-Bo Wu , Jun-Wang Lu , Wen-Xin Zhang , Cheng-Yuan Zhang , Jian-Bo Lu , Fang Yu

We analyse the coexistence of superfluid and density wave (stripe) order in a quasi-two-dimensional gas of dipolar fermions aligned by an external field. Remarkably, the anisotropic nature of the dipolar interaction allows for such a…

Quantum Gases · Physics 2015-06-10 Zhigang Wu , Jens K. Block , Georg M. Bruun

We study in detail the phase structure of a holographic p-wave superconductor model in a five dimensional Einstein-Maxwell-complex vector field theory with a negative cosmological constant. To construct complete phase diagrams of the model,…

General Relativity and Quantum Cosmology · Physics 2014-04-11 Rong-Gen Cai , Li Li , Li-Fang Li , Run-Qiu Yang

We consider holographic superconductors in a broad class of massive gravity backgrounds. These theories provide a holographic description of a superconductor with broken translational symmetry. Such models exhibit a rich phase structure:…

High Energy Physics - Theory · Physics 2015-07-21 Matteo Baggioli , Mikhail Goykhman

We show that a D3/D7 system (at zero quark mass limit) at finite isospin chemical potential goes through a superconductor (superfluid) like phase transition. This is similar to a flavored superfluid phase studied in QCD literature, where…

High Energy Physics - Theory · Physics 2009-11-19 Pallab Basu , Jianyang He , Anindya Mukherjee , Hsien-Hang Shieh

Zero-energy flat bands within the superconducting gap can give rise to competing ordered phases. We investigate such phases in topological superconductors based on the magnetic adatom platform hosting a flat band of Majorana edge states.…

We study quantum quench in a holographic model of a zero temperature insulator-superfluid transition. The model is a modification of that of arXiv:0911.0962 and involves a self-coupled complex scalar field, Einstein gravity with a negative…

High Energy Physics - Theory · Physics 2015-06-12 Pallab Basu , Diptarka Das , Sumit R. Das , Tatsuma Nishioka

The sound modes of a flowing superfluid is described by the massless Klein-Gordon equation in an effective background metric. This effective background metric can be designed to mimick a black hole using the acoustic horizon. In this work,…

General Physics · Physics 2024-10-10 Joseph Carlo U. Candare , Kristian Hauser A. Villegas

We obtain the equation of state (EoS) and the sound velocity for 2-color QCD at low temperature and high density and find that in the superfluid phase, $c_s^2/c^2 >1/3$, where $1/3$ is the value at the relativistic limit. Several…

High Energy Physics - Lattice · Physics 2022-10-27 Etsuko Itou , Kei Iida

In this paper, we study the fate of the holographic zero sound mode at finite temperature and non-zero baryon density in the deconfined phase of the Sakai-Sugimoto model of holographic QCD. We establish the existence of such a mode for a…

High Energy Physics - Theory · Physics 2014-05-02 Brandon S. DiNunno , Matthias Ihl , Niko Jokela , Juan F. Pedraza

We construct inhomogeneous asymptotically AdS black hole solutions corresponding to the spontaneous breaking of translational invariance and the formation of striped order in the boundary field theory. We find that the system undergoes a…

High Energy Physics - Theory · Physics 2013-05-22 Moshe Rozali , Darren Smyth , Evgeny Sorkin , Jared B. Stang

We construct novel static, asymptotically $AdS_5$ black hole solutions with Bianchi VII$_0$ symmetry that are holographically dual to superconducting phases in four spacetime dimensions with a helical p-wave order. We calculate the precise…

High Energy Physics - Theory · Physics 2015-06-04 Aristomenis Donos , Jerome P. Gauntlett

We investigate the holographic description of a superconductor constructed in the (2+1)-dimensional AdS soliton background in the probe limit. We study the holographic properties through both analytical and numerical methods. With…

High Energy Physics - Theory · Physics 2016-06-01 Yan Peng

We construct a holographic multi-band superconductor model with each complex scalar field in the bulk minimally coupled to a same gauge field. Taking into account the back reaction of matter fields on the background geometry and focusing on…

High Energy Physics - Theory · Physics 2014-01-24 Rong-Gen Cai , Li Li , Li-Fang Li , Yong-Qiang Wang

Understanding the role of charge density wave (CDW) in high-temperature superconductivity is a longstanding challenge in condensed matter physics. We construct a holographic superconductor model in which the $U(1)$ symmetry is spontaneously…

High Energy Physics - Theory · Physics 2021-01-04 Yi Ling , Peng Liu , Meng-He Wu

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…

High Energy Physics - Theory · Physics 2014-11-20 Nabil Iqbal , Hong Liu , Márk Mezei , Qimiao Si

We study the competition of antiferromagnetism and d-wave superconductivity at zero-temperature in the two-dimensional Hubbard model using Cellular Dynamical Mean Field Theory. The interplay between the two phases depends strongly on the…

Strongly Correlated Electrons · Physics 2007-08-07 M. Capone , G. Kotliar