2010/02/25 by Brian Swingle · 2 citations
Physics and Astronomy · #cond-mat.str-el #hep-th #quant-ph
paper · pdf · doi:10.1103/physrevb.86.035116
published as Phys. Rev. B, 86, 035116 (2012) · 4 pages + references, 2 figures
arxiv created 2010/02/25 · arxiv updated 2012/10/03
The Fermi surface may be usefully viewed as a collection of 1+1 dimensional chiral conformal field theories. This approach permits straightforward calculation of many anomalous ground state properties of the Fermi gas including entanglement entropy and number fluctuations. The 1+1 dimensional picture also generalizes to finite temperature and the presence of interactions. Finally, I argue that the low energy entanglement structure of Fermi liquid theory is universal, depending only on the geometry of the interacting Fermi surface.