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Slow Fermions in Quantum Critical Metals

A. Liam Fitzpatrick
(
- Stanford U., ITP and
- SLAC
)
,
Shamit Kachru
(
- Stanford U., ITP and
- SLAC
)
,
Jared Kaplan
(
- Johns Hopkins U.
)
,
Steven A. Kivelson
(
- Stanford U., ITP
)
,
S. Raghu
(
- Stanford U., ITP and
- SLAC
)

Feb 21, 2014

5 pages

e-Print:

1402.5413 [cond-mat.str-el]

View in:

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Abstract: (arXiv)

We study the low-energy behavior of metals coupled to gapless bosons. This problem arises in several contexts in modern condensed matter physics; we focus on the theory of metals near continuous quantum phase transitions (where the boson is the order parameter). In the vicinity of d=3 spatial dimensions, the upper critical dimension of the theory, the ratio of fermion and boson speeds, v/c, acts as an additional control parameter, enabling us to access IR fixed points where this ratio vanishes. This limit corresponds to a non-Fermi liquid coupled to bosons with critical exponents governed by the Wilson-Fisher fixed point.

Note:

This paper is undergoing reconstruction, as the existing argument is incorrect

fixed point: infrared
metal
critical phenomena
liquid
energy: low
numerical calculations

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Figures(3)

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