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cond-mat.str-el2026
flux quantization in metals due to Berry phase coherence
Chandra M. Varma
Berry curvature does not show itself in the relative phase correlation of wave-functions at different spatial points in a metal unless the fermions have closed trajectories in mome…
cond-mat.str-el2025
Universality and Crossovers for Quantum-Criticality in 2d metals
Chandra M. Varma
A simple generalization of the theory of crossovers in classical-criticality to quantum-criticality gives that, a Heisenberg model with a small anisotropy favoring planar order has…
cond-mat.str-el2024
Shot Noise near Quantum-Criticality
Srinivas Raghu, Chandra M. Varma
Shot-noise measures the correlations of fluctuations of current for a voltage applied much larger than the temperature and reveals aspects of correlations in fermions beyond those…