3 papers
hep-th2026
Bosonization versus the Nielsen-Ninomiya theorem
Saif Ullah Baig, Shi Chen, Aleksey Cherman +1
Thanks to bosonization, bosonic lattice models can offer a lattice regularization of chiral fermions. We construct chiral lattice fermion operators in the 2D modified Villain scala…
hep-th2026
Does hot QCD have a conformal manifold in the chiral limit?
Shi Chen, Aleksey Cherman, Robert D. Pisarski
Recent lattice evidence suggests the chiral phase transition in QCD is second-order for massless flavors. We constrain CFT descriptions of a critical line in temperatur…
hep-th2025
Symmetry theta angles and topological Witten effects
Shi Chen, Aleksey Cherman, Maria Neuzil
We introduce a large class of angles in quantum field theory that we call symmetry angles. Unlike conventional angles whose definition depends on a choice of a path…