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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,…
Aspects of Renormalization in Finite Density Field Theory
A. Liam Fitzpatrick, Gonzalo Torroba, Huajia Wang
We study the renormalization of the Fermi surface coupled to a massless boson near three spatial dimensions. For this, we set up a Wilsonian RG with independent decimation procedur…
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…