Light-cones, almost light-cones and almost-complex light-cones
Sign Up to like & getrecommendations! Published in 2017 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-017-2264-1
Abstract: We point out (and then apply to a general situation) an unusual relationship among a variety of null geodesic congruences; (a) the generators of ordinary light-cones and (b) certain (related) shear-free but twisting congruences in… read more here.
Keywords: complex light; shear free; almost complex; almost light ... See more keywords
Interacting relativistic quantum dynamics of two particles on spacetimes with a Big Bang singularity
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Mathematical Physics"
DOI: 10.1063/1.5078579
Abstract: Relativistic quantum theories are usually thought of as being quantum field theories, but this is not the only possibility. Here, we consider relativistic quantum theories with a fixed number of particles that interact neither through… read more here.
Keywords: two particles; quantum; light cones; quantum theories ... See more keywords
Fakeons and microcausality: light cones, gravitational waves and the Hubble constant
Sign Up to like & getrecommendations! Published in 2020 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ab78d2
Abstract: The concept of fake particle, or "fakeon", allows us to make sense of quantum gravity as an ultraviolet complete theory, by renouncing causality at very small distances. We investigate whether the violation of microcausality can… read more here.
Keywords: gravitational waves; microcausality light; hubble constant; light cones ... See more keywords
Semi-analytic forecasts for JWST – VI. Simulated light-cones and galaxy clustering predictions
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stac2139
Abstract: In anticipation of the new era of high-redshift exploration marked by the commissioning of the James Webb Space Telescope (JWST), we present two sets of galaxy catalogues that are designed to aid the planning and… read more here.
Keywords: light cones; galaxy clustering; simulated light; semi analytic ... See more keywords