Quantum chaos and fluctuations in isolated nuclear spin systems

Abstract

Using numerical simulations we investigate dynamical quantum chaos in isolated nuclear spin systems. We determine the structure of quantum states, investigate the validity of the Curie law for magnetic susceptibility and find the spectrum of magnetic noise. The spectrum is the same for positive and negative temperatures. The study is motivated by recent interest in condensed-matter experiments for searches of fundamental parity- and time-reversal-invariance violations. In these experiments nuclear spins are cooled down to microkelvin temperatures and are completely decoupled from their surroundings. A limitation on statistical sensitivity of the experiments arises from the magnetic noise.

4 pages, 4 figures

References in corpus (5)

• Measurement of the electron electric dipole moment using GdIG
• Proposal for a sensitive search for electric dipole moment of electron with matrix-isolated radicals
• On the sensitivity of condensed-matter P- and T-violation experiments
• A suggested search for 207Pb nuclear Schiff moment in PbTiO3 ferroelectric
• Molecular CP-violating magnetic moment

Cited by in corpus (2)

• Nuclear-spin relaxation of ${}^{207}$Pb in ferroelectric powders
• Investigating the nuclear Schiff moment of ${}^{207}$Pb in ferroelectric PbTiO${}_3$