14 citations · 17 across the 17 of their papers we have counts for
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Fermionic cosmic strings in dynamical Chern-Simons gravity
Stephon Alexander, Heliudson Bernardo, Shengyuan Zhang
We investigate topological defects produced by a chiral phase transition in a fermionic ultraviolet completion of dynamical Chern-Simons (dCS) gravity. The model contains a complex…
Four-Fermion Condensates in Curved Spacetimes: A Functional Approach
Stephon Alexander, Heliudson Bernardo, Jiatong Yan
Four-fermion interactions appear in effective descriptions of particle physics, many-body systems, and gravitational theories with fermions. Although the same local operator may en…
Quantum de Sitter and Analytically Continued Chern Simons Theory
Stephon Alexander, Kenneth Blakey
We give a Lefschetz thimble definition of the Chern--Simons--Kodama wavefunctional in Lorentzian self-dual gravity with positive cosmological constant. By complexifying the connect…
A Quantum Gravitational Mechanism for Isotropization of de Sitter Cosmologies
Stephon Alexander, Bruno Alexandre, Daine L. Danielson +1
Today, the observable cosmos exhibits a remarkable degree of isotropy and plausibly began in a nearly isotropic initial state. The properties of the Lorentzian Chern-Simons-Kodama…
A Unified Fermionic Origin for Density-Driven Waterfall Inflation and its Multi-Messenger Signatures
Stephon Alexander, Pisin Chen, Jinglong Liu +3
Inflation is conventionally described by fundamental scalar fields whose microscopic origin remains unknown. We propose a different mechanism in which inflation emerges from fermio…