13 papers
Resonances at finite temperature from the lattice
Jakob Hoffmann, Peter Lowdon, Owe Philipsen
The properties of hadronic resonances at finite temperature constitute an important probe of the thermal QCD medium. In this work we use the concept of thermoparticles, which chara…
Towards a consistent perturbation theory at finite temperature
Passant Ali, Peter Lowdon, Owe Philipsen
The standard approach to perturbation theory for finite-temperature quantum field theories has several issues, including the appearance of ill-defined on-shell contributions in the…
Emergent chiral spin symmetry, non-perturbative dynamics and thermoparticles in hot QCD
Owe Philipsen
Several non-perturbative results for hot QCD are challenging some aspects of the phase diagram and its associated degrees of freedom which were previously believed to be well under…
On the phase structure of massless many-flavour QCD with staggered fermions
Jan Philipp Klinger, Reinhold Kaiser, Owe Philipsen +1
When the number of massless fermions exceeds a critical value , QCD enters the conformal window and becomes chirally symmetric already in the vacuum. Determining fro…
On the nature of the QCD chiral phase transition with imaginary chemical potential
Alfredo D'Ambrosio, Michael Fromm, Reinhold Kaiser +1
The order of the thermal chiral phase transition in lattice QCD is known to be strongly cutoff-dependent. A previous study using mass-degenerate, unimproved…
Goldstone bosons at non-zero temperature
Peter Lowdon, Owe Philipsen
Spontaneous symmetry breaking in quantum field theories at non-zero temperature still holds fundamental open questions, in particular what happens to vacuum Goldstone bosons when t…