7 papers
Electromagnetic instantons and asymmetric Hawking radiation of black holes
Archil Kobakhidze, Elden Loomes
We argue that the topological structure of Abelian gauge theories, such as Maxwell electrodynamics, in the background of a Euclidean Schwarzschild black hole manifests itself throu…
LieTrunc-QNN: Lie Algebra Truncation and Quantum Expressivity Phase Transition from LiePrune to Provably Stable Quantum Neural Networks
Haijian Shao, Dalong Zhao, Xing Deng +2
Quantum Machine Learning (QML) is fundamentally limited by two challenges: barren plateaus (exponentially vanishing gradients) and the fragility of parameterized quantum circuits u…
QCD and electroweak phase transitions with hidden scale invariance: implications for primordial black holes, quark-lepton nuggets and gravitational waves
Joshua Cesca, Archil Kobakhidze
We study the cosmological implications of the minimal non-linear realisation of scale invariance within the Standard Model (SM). This framework provides a technically natural expla…
Comments on the gauge dependence of the effective potential and the utility of the Vilkovisky-DeWitt formalism
Daniel W. Collison, Archil Kobakhidze
We provide some additional comments on the long-lived discussions surrounding an effective action and potential plagued by a number of ambiguities. We reinforce the importance of a…
Emergent Dark Matter
Christian Canete, Archil Kobakhidze
We entertain the possibility that the phenomena typically attributed to dark matter may have a fundamentally emergent nature, rather than arising from new particle degrees of freed…
-meson from topological properties of the electroweak vacuum
Gia Dvali, Archil Kobakhidze, Otari Sakhelashvili
We further scrutinize the evidence for a recently suggested pseudo-scalar particle, the electroweak -meson. Its existence is demanded by matching the removal of the wea…