55 citations · 472 across the 31 of their papers we have counts for
31 papers
Dark matter from the quadratic spinor Lagrangian II: A spin-3/2 no-go and the uniqueness of the spin-1/2 candidate
Roh-Suan Tung
The composite Quadratic Spinor Lagrangian (QSL) propagates a spin-1/2 Dirac fermion whose mass is generated geometrically by cosmological trace torsion. It is natural to ask whethe…
Dark matter from the quadratic spinor Lagrangian I: Geometric mass for a gravitationally produced spin-1/2 fermion
Roh-Suan Tung
The gravitational-wave induced freeze-in of Maleknejad and Kopp (2026) produces dark fermions from a stochastic gravitational-wave background, but requires them to acquire mass by…
Spacetime torsion fixes the mass and spin of gravitationally produced dark matter
Roh-Suan Tung
The gravitational production of dark matter from stochastic gravitational waves requires the produced fermion to acquire a mass by unspecified late-time physics. We show that this…
Gravitational Energy for GR and Poincare Gauge Theories: a Covariant Hamiltonian Approach
Chiang-Mei Chen, James M. Nester, Roh-Suan Tung
Our topic concerns a long standing puzzle: the energy of gravitating systems. More precisely we want to consider, for gravitating systems, how to best describe energy-momentum and…
Scalar Field Cosmology II: Superfluidity, Quantum Turbulence, and Inflation
Kerson Huang, Hwee-Boon Low, Roh-Suan Tung
We generalize the big-bang model in a previous paper by extending the real vacuum scalar field to a complex vacuum scalar field, within the FLRW framework. The phase dynamics of th…
Scalar Field Cosmology I: Asymptotic Freedom and the Initial-Value Problem
Kerson Huang, Hwee-Boon Low, Roh-Suan Tung
The purpose of this work is to use a renormalized quantum scalar field to investigate very early cosmology, in the Planck era immediately following the big bang. Renormalization ef…