#torsion
5 papers · 1 filter
SU(3)-structures on quotients of 3-Sasakian orbifolds
Quentin Peres, Dimitrios Tsimpis
The paper studies how quotients of 7‑dimensional quasi‑regular 3‑Sasakian orbifolds by a Reeb vector field inherit SU(3)‑structures, computes their torsion, and identifies cases th…
Massive and massless particles in Mielke--Baekler geometries
Carles Batlle, Roberto Casalbuoni, Daniele Dominici +3
The paper builds worldline actions for massive and massless spinning particles moving in three‑dimensional Mielke‑Baekler spacetimes, exploring both torsional (teleparallel) and Le…
Light propagation and intensity transport in metric-affine geometry
Antonio De Felice, Lavinia Heisenberg, Gonzalo J. Olmo +1
The paper investigates how electromagnetic waves travel in spacetimes with torsion and non‑metricity, constructing gauge‑invariant models that can alter light cones, cause birefrin…
Taub-NUT as gravitational dyon with torsion
Dmitri Gal'tsov, Rostom Karsanov
The paper demonstrates that adding torsion to the Taub‑NUT spacetime removes singularities in the Levi‑Civita connection and yields an Einstein tensor interpretable as a cosmic str…
Gravitational waves in Cubic Metric-Affine Gravity
Sebastian Bahamonde, Jorge Gigante Valcarcel, José M. M. Senovilla
The paper presents exact pp‑wave solutions in a cubic metric‑affine gravity model that include dynamical torsion and nonmetricity, leading to an additional scalar polarization mode…