activity
20062026
most citedKeldysh technique and non-linear sigma-model: basic principles and applications

396 citations · 547 across the 11 of their papers we have counts for

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6 papers · 1 filter

cond-mat.supr-con2026

Evanescent-wave Johnson Noise from Superconductors

Hruday Mallubhotla, Gustav Romare, Ilya Esterlis +3

We compute the evanescent-wave Johnson noise (EWJN) in the vacuum half-space above a superconductor, and the resulting relaxation time () of spin and charge qubits placed at n…

cond-mat.supr-con2026

Photogalvanic transport of nonreciprocal Cooper-pair fluctuations

Joaquim Telles de Miranda, Alex Levchenko

We develop a theory of the nonlinear optical and transport responses of two-dimensional noncentrosymmetric superconductors in the fluctuation regime above the transition temperatur…

cond-mat.supr-con2026

Kinetic Lifshitz invariants and dynamics of nonreciprocal fluctuations in superconductors

Tony Liu, Joaquim Telles de Miranda, Daniel Shaffer +1

We derive the generalized time-dependent Ginzburg-Landau theory of a disordered noncentrosymmetric superconductor from the Keldysh nonlinear sigma model, using a two-dimensional el…

cond-mat.supr-con2026

Probing nonlocal superconducting fluctuations with covariance noise magnetometry

Gustav Romare, Ilya Esterlis, Shimon Kolkowitz +1

The nonlocal superconducting fluctuation corrections to the conductivity tensor are calculated within the time-dependent Ginzburg-Landau framework, and their…

cond-mat.supr-con2026

Anomalous Hall Effect Driven by Chiral Superconductivity

Alex Levchenko, Leonid Levitov

Direct dc-current signatures of unconventional superconductivity remain scarce. Existing probes of unconventional pairing are typically indirect, relying on phase-diagram anomalies…

cond-mat.str-el2026

Superconductivity near two-dimensional Van Hove singularities: a determinant quantum Monte Carlo study

Gustav Romare, Daniel Shaffer, Alex Levchenko +2

The superconducting transition temperature of the two-dimensional attractive Hubbard model is computed in the vicinity of both ordinary (logarithmic) and higher-order (power-…