2 papers
cond-mat.str-el2024
Recursive algorithm for generating high-temperature expansions for spin systems and the chiral non-linear susceptibility
Andreas Rückriegel, Dmytro Tarasevych, Jan Krieg +1
We show that the high-temperature expansion of the free energy and arbitrary imaginary-time-ordered connected correlation functions of quantum spin systems can be recursively obtai…
cond-mat.str-el2024
Phase diagram of the - quantum Heisenberg model for arbitrary spin
Andreas Rückriegel, Dmytro Tarasevych, Peter Kopietz
We use the spin functional renormalization group to investigate the - quantum Heisenberg model on a square lattice. By incorporating sum rules associated with the fixed l…