73 citations · 940 across the 53 of their papers we have counts for
55 papers
Symmetry breaking and thermal phase transition of the spin-1 quantum magnet with SU(3) symmetry on the simple cubic lattice
Nils Caci, Dominik Chudy, Pablo Daniel Mendez Mariscal +2
Using a combined analysis from Poisson-Dirichlet and symmetry-breaking calculations as well as quantum Monte Carlo simulations, we examine the ordered phase and the thermal phase t…
Kac-Ward solution of the 2D classical and 1D quantum Ising models
Georgios Athanasopoulos, Daniel Ueltschi
We give a rigorous derivation of the free energy of (i) the classical Ising model on the triangular lattice with translation-invariant coupling constants, and (ii) the one-dimensio…
A two-table theorem for a disordered Chinese restaurant process
Jakob E. Björnberg, Cécile Mailler, Peter Mörters +1
We investigate a disordered variant of Pitman's Chinese restaurant process where tables carry i.i.d. weights. Incoming customers choose to sit at an occupied table with a probabili…
Poisson-Dirichlet distributions and weakly first-order spin-nematic phase transitions
Nils Caci, Peter Mühlbacher, Daniel Ueltschi +1
We provide a quantitative characterization of generic weakly first-order thermal phase transitions out of planar spin-nematic states in three-dimensional spin-one quantum magnets,…
Reflection positivity and infrared bounds for quantum spin systems
Jakob E. Björnberg, Daniel Ueltschi
The method of reflection positivity and infrared bounds allows to prove the occurrence of phase transitions in systems with continuous symmetries. We review the method in the conte…
Dimerization in quantum spin chains with symmetry
Jakob E. Björnberg, Peter Mühlbacher, Bruno Nachtergaele +1
We consider quantum spins with , and two-body interactions with symmetry. We discuss the ground state phase diagram of the one-dimensional system. We give a rigor…