-
1
Classical and quantum spin liquids
Published 2025-01-01“…This phenomenon of phase transition has been well understood using statistical mechanics and simple modelling.In this short lecture notes, we will review the possibility that a many-body magnetic system may remain magnetically disordered down to zero-temperature, both for classical or quantum spins. …”
Get full text
Article -
2
Perturbative Stability and Error-Correction Thresholds of Quantum Codes
Published 2025-02-01“…We connect the two notions of stability by constructing classical statistical mechanics models for decoding general Calderbank-Shor-Steane codes and classical linear codes. …”
Get full text
Article -
3
Teaching ideal quantum measurement, from dynamics to interpretation
Published 2024-05-01“…We present a graduate course on ideal measurements, analyzed as dynamical processes of interaction between the tested system S and an apparatus A, described by quantum statistical mechanics. The apparatus A = M + B involves a macroscopic measuring device M and a bath B. …”
Get full text
Article -
4
Extensive composable entropy for the analysis of cosmological data
Published 2025-02-01“…Still, its intriguing area dependence points out the relevance of considering the form W(N)∼μNγ(μ>1;γ>0), W and N respectively being the total number of microscopic possibilities and the number of components; γ=1 corresponds to standard Boltzmann-Gibbs (BG) statistical mechanics. For this W(N) asymptotic behavior, we make use of the group-theoretic entropic functional Sα,γ=k[lnΣi=1Wpiα1−α]1γ(α∈R;S1,1=SBG≡−k∑i=1Wpilnpi), first derived by P. …”
Get full text
Article