Results 41 to 50 of about 203,417 (295)

Quantum Imprints on CMBR

Universe, 2023
Quantum cosmology aims to develop a quantum theory of the universe, attempting to answer open questions of physical cosmology, mainly related to the early epochs of the universe. Such a theory aims to unite relativity theory and quantum theory. Here, the
Shreya Banerjee
doaj   +1 more source

Accelerating cosmology in Rastall's theory

Il Nuovo Cimento B, 2009
In an attempt to look for a viable mechanism leading to a present-day accelerated expansion, we investigate the possibility that the observed cosmic speed up may be recovered in the framework of the Rastall's theory, relying on the non-conservativity of the stress-energy tensor, i.e. $T^ _{ ; } \neq 0$.
CAPONE, Monica, V. F. Cardone, M. L. Ruggiero   +2 more
openaire   +3 more sources

‘Turkeys Cannot Vote for Christmas’: Why Epistemic Disobedience in an Anti‐Black World Matters

Australian Journal of Social Issues, EarlyView.
ABSTRACT Never in the history of global coloniality has the idea of epistemic disobedience been as important as in the 21st century. This is not only because the struggle for decolonisation has shifted from physical confrontation between the coloniser and the colonised into a battle of ideas but also because the former has deployed the idea of ...
Morgan Ndlovu
wiley   +1 more source

Kaluza–Klein inspired a model of the inflation with the inverse power law potential in Bianchi type-I universe

European Physical Journal C: Particles and Fields
This work considers the dynamics of the gauge vector and inflaton (dilaton) fields inspired by Kaluza–Klein theory in an inflationary universe with Bianchi type-I spacetime. The inverse power-law potential of the inflaton field is used to study dynamical
Jaturaporn Watanakampolkij, Patinya Ma-ardlerd, Natthason Autthisin, Pornpatara Chuvala, Nutthaphat Lunrasri, Chakrit Pongkitivanichkul, Daris Samart   +6 more
doaj   +1 more source

Noncommutative Quantum Cosmology

, 2004
We consider noncommutative quantum cosmology in the case of the low-energy string effective theory. Exacts solutions are found and compared with the commutative case.The Noncommutative quantum cosmology is considered in the case of the low-energy string ...
A. Connes, A.H. Chamseddine, C.S. Chu, César Mora, H. García-Compeán, J. Gamboa, J.E. Moyal, J.M. Carmona, J.M. Romero, Luis O. Pimentel, M. Gasperini, N. Seibert, V. Schomerus   +12 more
core   +1 more source

Work Versus Force: Simultaneous Processes for Describing Interactions

Advanced Physics Research, EarlyView.
ABSTRACT Achieving a unified description of interactions remains an open challenge in theoretical physics, which currently describes four fundamental forces. This situation may be viewed differently when interactions are formulated in terms of processes (work as actio) rather than forces (force as actio), not only at the macroscopic level but also at ...
Grit Kalies, Duong D. Do, Cornelia Breitkopf   +2 more
wiley   +1 more source

Detecting kinematic boundary surfaces in phase space: particle mass measurements in SUSY-like events

Journal of High Energy Physics, 2017
We critically examine the classic endpoint method for particle mass determination, focusing on difficult corners of parameter space, where some of the measurements are not independent, while others are adversely affected by the experimental resolution ...
Dipsikha Debnath, James S. Gainer, Can Kilic, Doojin Kim, Konstantin T. Matchev, Yuan-Pao Yang   +5 more
doaj   +1 more source

On acceleration in three dimensions

Journal of High Energy Physics, 2022
We go “back to basics”, studying accelerating systems in 2 + 1 AdS gravity ab initio. We find three classes of geometry, which we interpret by studying holographically their physical parameters.
Gabriel Arenas-Henriquez, Ruth Gregory, Andrew Scoins   +2 more
doaj   +1 more source

Looking Beyond Inflationary Cosmology

, 2005
In spite of the phenomenological successes of the inflationary universe scenario, the current realizations of inflation making use of scalar fields lead to serious conceptual problems which are reviewed in this lecture.
Adams K., Albrecht P., Alexander R.H., Battefeld S., Bennett M., Berndsen J.M., Biswas R., Borde A., Brandenberger, Brandenberger, Brandenberger C., Brandenberger D.A., Brandenberger D.A., Brandenberger J.H., Brandenberger P.M., Brout F., Burgess J.M., Chu B.R., Corley T., Durrer M., Easson M., Easther B.R., Easther B.R., Feldman R.H., Gasperini G., Giddings S., Goldwirth T., Kallosh L., Kempf J.C., Khoury B.A., Kripfganz H., Majumdar A.-C., Mazenko R.M., Mukhanov G.V., Mukhanov H.A., Patil, R H Brandenberger, Randall, Smoot C.L., Tsamis R.P., Tseytlin C., Watson, Watson R.H.   +42 more
core   +1 more source

Brane Gas Cosmology, M-theory and Little String Theory [PDF]

, 2002
We generalize the Brane Gas Cosmological Scenario to M-theory degrees of freedom, namely $M5$ and $M2$ branes. Without brane intersections, the Brandenberger Vafa(BV) arguments applied to M-theory degrees of freedom generically predict a large 6 ...
A.A. Tseytlin, A.A. Tseytlin, C.P. Herzog, D. Kutasov, D.A. Easson, E. Witten, H. Liu, H.S. Alexander Stephon, I. Bandos, M.F. Parry, O. Aharony, O. Aharony, O.J. Ganor, R. Brandenberger, R.H. Brandenberger, S. Alexander, S. Minwalla, S. Watson, T. Boehm   +18 more
core   +2 more sources