3 papers
gr-qc2025
The axion coupling accelerates the Universe through PT-symmetric phases
Leqian Chen, Nick E. Mavromatos, Sarben Sarkar
The conjecture by two of the authors (N.E.M. and S.S.) that a \cPT-symmetric phase plays a role in understanding singular renormalisation group (RG) flows for a Chern-Simons (CS) g…
quant-ph2024
Phases of quartic scalar theories and PT symmetry
Leqian Chen, Sarben Sarkar
For quantum mechanical anharmonic oscillator-type Hamiltonians, it is shown that there is a relation between the energy eigenvalues of parity symmetric and PT-symmetric phases for…
quant-ph2024
PT symmetric fermionic particle oscillations in even dimensional representations
Leqian Chen, Sarben Sarkar
We describe a novel class of quantum mechanical particle oscillations in both relativistic and non-relativistic systems based on symmetry and (relevant for fermions),…