Free energy asymptotics of the quantum Heisenberg spin chain
M.M. Napiórkowski, R. Seiringer, Letters in Mathematical Physics 111 (2021).

Calculation of the critical temperature of a dilute Bose gas in the Bogoliubov approximation
M.M. Napiórkowski, R. Reuvers, J. Solovej, EPL 121 (2018).

The Bogoliubov free energy functional II: The dilute Limit

The Bogoliubov free energy functional I: Existence of minimizers and phase diagram
M.M. Napiórkowski, R. Reuvers, J.P. Solovej, Archive for Rational Mechanics and Analysis 229 (2018) 1037–1090.

A note on the validity of Bogoliubov correction to mean field dynamics

Bogoliubov correction to the mean-field dynamics of interacting bosons

Diagonalization of bosonic quadratic Hamiltonians by Bogoliubov transformations
P. Nam, M.M. Napiórkowski, J. Solovej, Journal of Functional Analysis 270 (2016) 4340–4368.

Excitation spectrum of interacting bosons in the Mean-Field Infinite-Volume limit
J. Dereziski, M.M. Napiórkowski, Annales Henri Poincaré 15 (2014) 2409–2439.