Results 111 to 120 of about 49,682 (257)

Expected value, to a point: Moral decision‐making under background uncertainty

Noûs, Volume 59, Issue 4, Page 1093-1125, December 2025.
Abstract Expected value maximization gives plausible guidance for moral decision‐making under uncertainty in many situations. But it has unappetizing implications in ‘Pascalian’ situations involving tiny probabilities of extreme outcomes. This paper shows, first, that under realistic levels of ‘background uncertainty’ about sources of value independent
Christian Tarsney
wiley   +1 more source

Peccei-Quinn mechanism and axion interactions in the 3-3-1 model with Cosmological Inflation [PDF]

, 2023
H. N. Long, Sergey Kovalenko
openalex   +1 more source

Onset of inflation in inhomogeneous cosmology

, 1996
We study how the initial inhomogeneities of the universe affect the onset of inflation in the closed universe. We consider the model of a chaotic inflation which is driven by a massive scalar field.
A. D. Linde, A.H. Guth, D. Deruelle, D.S. Goldwirth, D.S. Goldwirth, D.S. Salopek, E.M. Lifshitz, G.L. Comer, H. Sinkai, Hideki Ishihara, J. Parry, K. Sato, K. Tomita, N. Deruelle, O. Iguchi, Osamu Iguchi, R.M. Wald, V.A. Belinskii, V.A. Belinsky, V.F. Mukhanov, Y. Nambu   +20 more
core   +1 more source

Quantum Cosmology of Quadratic f(R) Theories with a FRW Metric

Advances in Mathematical Physics, 2017
We study the quantum cosmology of a quadratic fR theory with a FRW metric, via one of its equivalent Horndeski type actions, where the dynamic of the scalar field is induced.
V. Vázquez-Báez, C. Ramírez
doaj   +1 more source

Mirage cosmology with an unstable probe D3-brane

, 2005
We consider the mirage cosmology by an unstable probe brane whose action is represented by BDI action with tachyon. We study how the presence of tachyon affects the evolution of the brane inflation.
Dong Hyeok Jeong, E. Papantonopoulos, Jin Young Kim   +2 more
core   +3 more sources

Inflation from R^2 gravity: a new approach using nonlinear electrodynamics

, 2010
We discuss another approach regarding the inflation from the R^2 theory of gravity originally proposed by Starobinski. A non-singular early cosmology is proposed, where, adding a nonlinear electrodynamics Lagrangian to the high-order action, a bouncing ...
Acernese, Allemandi, Allemandi, Bamba, Bennett, Capozziello, Christian Corda, Cognola, Cognola, Cognola, Corda, Corda, Corda, Corda, Corda, Corda, Corda, Corda, De Lorenci, Elizalde, Elizalde, Faraoni, Guth, Herman J. Mosquera Cuesta, Hild, Maggiore, Mbelek, Misner, Mosquera Cuesta, Mosquera Cuesta, Nojiri, Nojiri, Nojiri, Nojiri, Peebles, Spergel, Starobinsky, Tatsumi, Tobar, Watson, Will, Willke   +41 more
core   +1 more source

Cosmic Inflation, Quantum Information and the Pioneering Role of John S Bell in Cosmology

Universe, 2019
According to the theory of cosmic inflation, the large scale structures observed in our Universe (galaxies, clusters of galaxies, Cosmic Background Microwave—CMB—anisotropy…) are of quantum mechanical origin. They are nothing but vacuum
Jérôme Martin
doaj   +1 more source

Beyond Inflation: A Cyclic Universe Scenario

, 2004
Inflation has been the leading early universe scenario for two decades, and has become an accepted element of the successful `cosmic concordance' model. However, there are many puzzling features of the resulting theory.
Seinhardt, Paul J., Turok, Neil
core   +1 more source

The Principle of Phase Transition Cosmology: The Current Universe Formed by the Evolution of Two-Component Quantum Superfluid

Reports in Advances of Physical Sciences
This paper aims to demonstrate that modern cosmology has overlooked the systematic and holistic aspects of the universe’s evolution. It is based on the notion that the primordial universe comprised a two-component quantum superfluid and a synthesis of ...
Xiaodong Yang, Yuchen Yang, Zhen Luo, Yuanbo Bi   +3 more
doaj   +1 more source

Model building with non-compact cosets

Physics Letters B, 2016
We explore Goldstone boson potentials in non-compact cosets of the form SO(n,1)/SO(n). We employ a geometric approach to find the scalar potential, and focus on the conditions under which it is compact in the large field limit.
Djuna Lize Croon
doaj   +1 more source