Exotic phases and quantum criticality in gapless correlated electron systems
Name
867861436-MIT.pdf
Description
Full printable version
Size
13.13 MB
Format
Adobe PDF
Checksum (MD5)
c9e4ee1ea10b211406409e33257a719b
Author(s)
Mross, David Fabian
Advisor(s)
Senthil Todadri.
Date Issued
2013
Publisher
Massachusetts Institute of Technology
Abstract
In this thesis, I theoretically studied exotic phases of matter than arise due to strong interactions between electrons in three different scenarios. Firstly, at a stripe melting phase transition, which may be relevant for the high temperature superconductors, where we propose a specific type of transition which produces critical exponents agreeing with neutron scattering experiments on LSCO. Secondly, for a Pomeranchuk transition where an electronic nematic order parameter develops we present a controlled expansion within which the physics of such a transition, and of the related problem of fermions coupled to a gauge field, can be addressed. Thirdly, in a quantum spin liquid phase that is likely to be realized in certain organic Mott insulators. Here we show how such a phase can be accessed from a low energy description of a metal, without resorting to slave-particle constructions. Methodologically, the work in this thesis relies on field theoretical methods such as the renormalization group, the large-N and related expansions, dualities, bosonization and slave-particle constructions.
Description
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 213-219).
Subjects
Physics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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