We examine cosmological perturbations in a dynamical theory of inflation in which an
Abelian gauge field couples directly to the inflaton, breaking conformal invariance. When the …

We investigate the dark matter and the cosmological baryon asymmetry in a simple theory
where baryon (B) and lepton (L) number are local gauge symmetries that are spontaneously …

We investigate the stability of theories in which Lorentz invariance is spontaneously broken
by fixed-norm vector “aether” fields. Models with generic kinetic terms are plagued either by …

We propose a robust portfolio optimization approach based on Value-at-Risk (VaR)-adjusted
Sharpe ratios. Traditional Sharpe ratio estimates using a limited series of historical returns …

Recently an extension of the Standard Model (the Lee–Wick Standard Model) based on
ideas of Lee and Wick (LW) was introduced. It does not contain quadratic divergences in the …

Theories of low-energy Lorentz violation by a fixed-norm “aether” vector field with two-derivative
kinetic terms have a globally bounded Hamiltonian and are perturbatively stable only if …

The academic and practitioner literature now includes numerous studies of the substantial
issue date mispricing of structured products but there is no large scale study of the ex-post …

We find that leverage in exchange traded funds (ETFs) can affect the ‘crookedness’ of volatility
smiles. This observation is consistent with the intuition that return shocks are inversely …

We study the classical stability of an anisotropic space-time seeded by a spacelike, fixed-norm,
dynamical vector field in a vacuum-energy-dominated inflationary era. It serves as a …

Equity-Indexed Annuities (EIAs) are deferred annuities which accumulate value over time
according to crediting formulas and realized equity index returns. We propose an efficient …