Results 81 to 90 of about 131,283 (219)

THE COSMOLOGICAL CONSTANT PROBLEM AND KALUZA–KLEIN THEORY [PDF]

International Journal of Modern Physics D, 2001
We present technical results which extend previous work and show that the cosmological constant of general relativity is an artefact of the reduction to 4D of 5D Kaluza–Klein theory (or 10D superstrings and 11D supergravity). We argue that the distinction between matter and vacuum is artificial in the context of ND field theory.
Wesson, Paul S., Liu, Hongya
openaire   +2 more sources

Integrating multimodal data and machine learning for entrepreneurship research

Strategic Entrepreneurship Journal, EarlyView.
Abstract Research Summary Extant research in neuroscience suggests that human perception is multimodal in nature—we model the world integrating diverse data sources such as sound, images, taste, and smell. Working in a dynamic environment, entrepreneurs are expected to draw on multimodal inputs in their decision making.
Yash Raj Shrestha, Vivianna Fang He
wiley   +1 more source

At the Edge of Uncertainty: Decoding the Cosmological Constant Value with the Bose–Einstein Distribution

Astronomy
We propose that the observed value of the cosmological constant may be explained by a fundamental uncertainty in the spacetime metric, which arises when combining the principle that mass and energy curve spacetime with the quantum uncertainty associated ...
Ahmed Farag Ali, Nader Inan
doaj   +1 more source

Categorizing Different Approaches to the Cosmological Constant Problem

, 2004
We have found that proposals addressing the old cosmological constant problem come in various categories. The aim of this paper is to identify as many different, credible mechanisms as possible and to provide them with a code for future reference.
A. Aguirre, A. Aurilia, A. Babic, A. Gomberoff, A. Hebecker, A. Jenkins, A. Linde, A. Linde, A. Linde, A. Linde, A. Linde, A. Nicolis, A. Strominger, A. Vilenkin, A. Vilenkin, A. Zee, A. Zee, A. Zee, A. Zee, A. Zee, A. Zee, A.A. Starobinsky, A.B. Lahanas, A.D. Dolgov, A.D. Linde, A.D. Linde, A.D. Linde, A.D. Linde, A.D. Sakharov, A.G. Cohen, A.G. Riess, A.M. Polyakov, A.V. Filippenko, B. Freivogel, B.J. Barris, B.S. DeWitt, B.S. DeWitt, C. Csaki, C. Deffayet, C. Espana-Bonet, C. Schmidhuber, C. Schmidhuber, C. Wetterich, C. Wetterich, C.L. Bennett, C.M. Will, C.M. Will, C.P. Burgess, D. Bailin, D. Krotov, D.F. Phillips, E. Baum, E. Elizalde, E. Verlinde, E. Witten, E. Witten, E.P. Verlinde, E.T. Tomboulis, F. Cane, F. Denef, G. Dvali, G. Dvali, G. Geshnizjani, G. Geshnizjani, G.E. Volovik, G.E. Volovik, G.E. Volovik, G.R. Dvali, G.R. Dvali, G.R. Dvali, H. Dam van, H. Kleinert, H. Kodama, H. Martel, I. Antoniadis, I. Antoniadis, I.L. Shapiro, J. Anderson, J. Barbour, J. Barrow, J. Garcia-Bellido, J. Garriga, J. Garriga, J. Garriga, J. Martin, J. Polchinski, J. Preskill, J. Sola, J.A. Grifols, J.D. Brown, J.D. Brown, J.D. Edelstein, J.D. Edelstein, J.E. Gunn, J.J. Bij van der, J.J. Bij van der, J.W. Moffat, K. Bautier, K. Becker, K.G. Wilson, L. Pogosian, L.H. Ford, L.P. Grishchuk, L.R. Abramo, L.R. Abramo, L.R.W. Abramo, M. Fierz, M. Henneaux, M. Li, M. Porrati, M. Reuter, M. Reuter, M.A. Luty, M.J. Duff, M.J. Duff, M.L. Graesser, M.R. Douglas, M.S. Turner, N. Afshordi, N. Arkani-Hamed, N. Arkani-Hamed, N.C. Tsamis, N.C. Tsamis, N.C. Tsamis, N.C. Tsamis, N.C. Tsamis, N.C. Tsamis, N.C. Tsamis, P. Kraus, P.A.M. Dirac, P.D. Mannheim, P.D. Mannheim, P.D. Mannheim, P.D. Mannheim, P.J.E. Peebles, P.O. Mazur, R. Bluhm, R. Bousso, R. Bousso, R. Durrer, R. Gregory, R. Kallosh, R. Sundrum, R. Sundrum, R.D. Peccei, S. Ashok, S. Coleman, S. Coleman, S. Deser, S. Deser, S. Hawking, S. Kachru, S. Mukohyama, S. Mukohyama, S. Weinberg, S. Weinberg, S. Weinberg, S. Weinberg, S.D. Odintsov, S.D.H. Hsu, S.L. Dubovsky, S.M. Carroll, S.R. Coleman, S.R. Coleman, S.W. Hawking, Stefan Nobbenhuis, T. Banks, T. Banks, T. Padmanabhan, T. Padmanabhan, T. Padmanabhan, T. Prokopec, V. Perlick, V. Sahni, V.A. Rubakov, V.A. Rubakov, V.F. Mukhanov, V.I. Zakharov, W. Fischler, W.G. Unruh, W.L. Freedman, Y. Aghababaie, Z. Berezhiani   +182 more
core   +1 more source

THE COSMOLOGICAL CONSTANT PROBLEM: A USER'S GUIDE [PDF]

International Journal of Modern Physics D, 2009
We discuss the validity of general relativity at low energy and relate the threshold below which the theory breaks down to the observed value of the cosmological constant. This suggests the existence of a mass scale of [Formula: see text] and a putative violation of the equivalence principle at about the 10−14 level.
openaire   +3 more sources

Mind and Cosmos as Throughput Systems: A Convergence Through the Throughput Model

Systems Research and Behavioral Science, EarlyView.
ABSTRACT This paper advances a conceptual and mathematical foundations approach by applying the throughput model (TPM) to cosmic phenomena, reframing the universe as an extended information processing system. TPM's four stages, Perception, Information, Judgement and Decision Choice, are reformulated in explicit information‐theoretic and dynamical ...
Waymond Rodgers
wiley   +1 more source

Cosmological constant from a deformation of the Wheeler–DeWitt equation

Nuclear Physics B, 2016
In this paper, we consider the Wheeler–DeWitt equation modified by a deformation of the second quantized canonical commutation relations. Such modified commutation relations are induced by a Generalized Uncertainty Principle.
Remo Garattini, Mir Faizal
doaj   +1 more source

The Cosmological Constant Problem and Nonlocal Quantum Gravity

, 2002
A nonlocal quantum gravity theory is presented which is finite and unitary to all orders of perturbation theory. Vertex form factors in Feynman diagrams involving gravitons suppress graviton and matter vacuum fluctuation loops by introducing a low-energy
Moffat, J. W.
core   +4 more sources

Is the cosmological constant problem properly posed? [PDF]

International Journal of Modern Physics D, 2017
In applications of Einstein gravity, one replaces the quantum-mechanical energy–momentum tensor of sources such as the degenerate electrons in a white dwarf or the black-body photons in the microwave background by c-number matrix elements. And not only that, one ignores the zero-point fluctuations in these sources by only retaining the normal-ordered ...
openaire   +2 more sources

Post‐Traumatic Growth in the Global South: Possibilities in Relational Ethics from Communities to Classrooms

TESOL Quarterly, EarlyView.
Abstract This article reports on a qualitative study of the way instructors and students understand and respond to traumatizing events in a Sri Lankan university. It shows how the attitudes and practices in the society at large are carried over to classrooms even though local institutions do not have a programmatic trauma‐informed pedagogy.
Suresh Canagarajah, Canista Arthie Hensman   +1 more
wiley   +1 more source