Boosted one dimensional fermionic superfluids on a lattice

Ray, Sayonee and Mukerjee, Subroto and Shenoy, Vijay B (2017) Boosted one dimensional fermionic superfluids on a lattice. In: ANNALS OF PHYSICS, 384 . pp. 71-84.

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Abstract

We study the effect of a boost (Fermi sea displaced by a finite momentum) on one dimensional systems of lattice fermions with short-ranged interactions. In the absence of a boost such systems with attractive interactions possess algebraic superconducting order. Motivated by physics in higher dimensions, one might naively expect a boost to weaken and ultimately destroy superconductivity. However, we show that for one dimensional systems the effect of the boost can be to strengthen the algebraic superconducting order by making correlation functions fall off more slowly with distance. This phenomenon can manifest in interesting ways, for example, a boost can produce a Luther-Emery phase in a system with both charge and spin gaps by engendering the destruction of the former. (C) 2017 Elsevier Inc. All rights reserved.

Item Type:	Journal Article
Publication:	ANNALS OF PHYSICS
Additional Information:	Copy right for this article belongs to the ACADEMIC PRESS INC ELSEVIER SCIENCE, 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	13 Oct 2017 04:52
Last Modified:	13 Oct 2017 04:52
URI:	http://eprints.iisc.ac.in/id/eprint/58022

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