13 citations · 13 across the 3 of their papers we have counts for
13 papers
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…
Gravitational Waves in Chern-Simons-Gauss-Bonnet Gravity
Tatsuya Daniel, Leah Jenks, Stephon Alexander
It is known that the four-dimensional effective field theory arising from heterotic string theory is general relativity with both a Chern-Simons and Gauss-Bonnet term. We study the…
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…
Fermion Condensate Inflation, Dynamical Waterfall Mechanism and Primordial Black Holes
Stephon Alexander, Pisin Chen, Jinglong Liu +3
Fermion condensate inflation, where inflation emerges from four-fermion interactions induced by spacetime torsion, removes the need for additional scalar fields beyond the Standard…
Quantum Gravity, de Sitter Space, and Normalizability
Stephon Alexander, Heliudson Bernardo, Jacob Kuntzleman +1
We propose a resolution to the longstanding problem of perturbative normalizability in canonical quantum gravity of the Lorentzian Chern-Simons-Kodama (CSK) state with a positive c…