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Abnormal dilepton yield from parity breaking in dense nuclear matter
Alexander Andrianov, Vladimir Andrianov, Domenec Espriu +1
At finite density parity can be spontaneously broken in strong interactions with far reaching implications. In particular, a time-dependent pseudoscalar background would modify QED…
Abnormal dilepton yield from local parity breaking in heavy-ion collisions
Alexander Andrianov, Vladimir Andrianov, Domenec Espriu +1
We propose a novel explanation for the dilepton excess observed in heavy ion collisions at invariant masses below 1 GeV. We argue that the presence of local parity breaking due to…
Spectral singularities for Non-Hermitian one-dimensional Hamiltonians: puzzles with resolution of identity
A. A. Andrianov, F. Cannata, A. V. Sokolov
We examine the completeness of bi-orthogonal sets of eigenfunctions for non-Hermitian Hamiltonians possessing a spectral singularity. The correct resolutions of identity are constr…
Bosonic Spectral Action Induced from Anomaly Cancelation
A. A. Andrianov, Fedele Lizzi
We show how (a slight modification of) the noncommutative geometry bosonic spectral action can be obtained by the cancelation of the scale anomaly of the fermionic action. In this…