3 papers
cond-mat.stat-mech2026
Higher Nishimori Criticality and Exact Results at the Learning Transition of Deformed Toric Codes
Rushikesh A. Patil, Malte Pütz, Simon Trebst +2
We revisit a learning-induced tricritical point, at which three phases with strong, weak, and broken symmetry meet, in the phase diagram of a deformed toric code wavefunction…
cond-mat.stat-mech2025
Shannon entropy of the measurement record at measurement-dominated criticality and RG flow: A c-theorem for effective central charge and a g-theorem for effective boundary entropy
Rushikesh A. Patil, Andreas W. W. Ludwig
We present two theorems demonstrating non-perturbatively the decrease under relevant renormalization group (RG) flow of two quantities, and charac…
cond-mat.stat-mech2024
Highly complex novel critical behavior from the intrinsic randomness of quantum mechanical measurements on critical ground states -- a controlled renormalization group analysis
Rushikesh A. Patil, Andreas W. W. Ludwig
We consider the effects of weak measurements on the quantum critical ground state of the one-dimensional (a) tricritical and (b) critical quantum Ising model, by measuring in (a) t…