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Two dimensional non-Fermi liquid metals: a solvable large N limit
Jeremias Aguilera Damia, Shamit Kachru, Srinivas Raghu +1
Significant effort has been devoted to the study of "non-Fermi liquid" (NFL) metals: gapless conducting systems that lack a quasiparticle description. One class of NFL metals invol…
Mirror symmetry and the half-filled Landau level
Shamit Kachru, Michael Mulligan, Gonzalo Torroba +1
We study the dynamics of the half-filled zeroth Landau level of Dirac fermions using mirror symmetry, a supersymmetric duality between certain pairs of -dimensional theories.…
Enhanced Pairing of Quantum Critical Metals Near d=3+1
A. Liam Fitzpatrick, Shamit Kachru, Jared Kaplan +3
We study the dynamics of a quantum critical boson coupled to a Fermi surface in intermediate energy regimes where the Landau damping of the boson can be parametrically controlled,…
Slow Fermions in Quantum Critical Metals
A. Liam Fitzpatrick, Shamit Kachru, Jared Kaplan +2
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 n…
Non-Fermi liquid behavior of large N_B quantum critical metals
A. Liam Fitzpatrick, Shamit Kachru, Jared Kaplan +1
The problem of continuous quantum phase transitions in metals involves critical bosons coupled to a Fermi surface. We solve the theory in the limit of a large number, N_B, of boson…
Non-Fermi liquid fixed point in a Wilsonian theory of quantum critical metals
A. Liam Fitzpatrick, Shamit Kachru, Jared Kaplan +1
We study the problem of disorder-free metals near a continuous quantum critical point. We depart from the standard paradigm of Hertz and Millis, and treat both fermions and bosons…