# Bosons in fluctuating gauge fields: Bose metal and phase separation

Source: [Bosons in fluctuating gauge fields: Bose metal and phase separation](<https://www.sota2.com/research/paper/68fa235a2c2a3760193965a8>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T06:38:24.128Z

Authors: Robert L. Jack, Derek K.K. Lee

Published: 2002-03-13T12:16:24.000Z

## Abstract

We study a two-dimensional system of bosons interacting with a fluctuating U(1) gauge field with overdamped dynamics. We find two instabilities of the condensed phase at T=0: one to phase separation and another to a homogeneous non-superfluid (Bose metal). The presence of both instabilities in the model is dependent on the low-energy form of the gauge field propagator. We discuss the relevance of our findings to the U(1) gauge theory of the t--J model.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/cond-mat/0203274>)

[PDF](<https://arxiv.org/pdf/cond-mat/0203274.pdf>)