Results 91 to 100 of about 20,994 (277)

Quantum Cosmology in the Light of Quantum Mechanics

Galaxies, 2019
There is a formal analogy between the evolution of the universe, when it is seen as a trajectory in the minisuperspace, and the worldline followed by a test particle in a curved spacetime.
Salvador J. Robles-Pérez
doaj   +1 more source

Improving Statistical Analysis in Team Science: The Case of a Bayesian Multiverse of Many Labs 4

Advances in Methods and Practices in Psychological Science, 2023
Team-science projects have become the “gold standard” for assessing the replicability and variability of key findings in psychological science. However, we believe the typical meta-analytic approach in these projects fails to match the wealth of ...
S. Hoogeveen, S. Berkhout, Q. Gronau, E. Wagenmakers, J. Haaf   +4 more
semanticscholar   +1 more source

From modality to millianism

Noûs, EarlyView.
Abstract A new argument is offered which proceeds through epistemic possibility (for all S knows, p), cutting a trail from modality to Millianism, the controversial thesis that the semantic content of a proper name is simply its bearer. New definitions are provided for various epistemic modal notions.
Nathan Salmón
wiley   +1 more source

Lessons from the void: What Boltzmann brains teach

Analytic Philosophy, EarlyView.
Abstract Some physical theories predict that almost all brains in the universe are Boltzmann brains, that is, short‐lived disembodied brains that are accidentally assembled as a result of thermodynamic or quantum fluctuations. Physicists and philosophers of physics widely regard this proliferation as unacceptable, and so take its prediction as a basis ...
Bradford Saad
wiley   +1 more source

Multiverse Understanding of Cosmological Coincidences

, 2009
There is a deep cosmological mystery: although dependent on very different underlying physics, the timescales of structure formation, of galaxy cooling (both radiatively and against the CMB), and of vacuum domination do not differ by many orders of ...
G. Efstathiou, J. D. Barrow, Lawrence J. Hall, M. J. Rees, Raphael Bousso, S. D. M. White, Yasunori Nomura   +6 more
core   +2 more sources

Temporal Passage in a Fragmented World

Analytic Philosophy, EarlyView.
ABSTRACT Fragmentalism is a relatively recent and striking addition to the debate between tensed and tenseless theories of time. First introduced by Fine in “Tense and Reality,” it presents a rare instance of both a theoretically intriguing and novel theory of time.
Kyley Ewing
wiley   +1 more source

Design of a Cyclic Multiverse

, 2010
Recently, it has been noticed that the amplification of the amplitude of curvature perturbation cycle by cycle can lead to a cyclic multiverse scenario, in which the number of universes increases cycle by cycle.
Alexander, Allen, Arefeva, Arefeva, Barrow, Baum, Biswas, Biswas, Biswas, Bozza, Bozza, Brandenberger, Brandenberger, Cai, Cai, Cai, Cai, Carr, Clifton, Durrer, Erickson, Feng, Finelli, Freese, Gonzalez-Diaz, Gonzalez-Diaz, Gonzalez-Diaz, Gott, Gratton, Ilie, Kanekar, Kodama, Lehners, Li, Lidsey, Linde, Lyth, Lyth, Mielczarek, Mielczarek, Mukhanov, Novello, Peter, Piao, Piao, Piao, Piao, Piao, Piao, Piao, Piao, Starobinsky, Steinhardt, Steinhardt, Steinhardt, Tolman, Tsujikawa, Vilenkin, Wands, Wands, Winitzki, Xiong, Yun-Song Piao, Zhang   +63 more
core   +1 more source

Impact of analytic decisions on test–retest reliability of individual and group estimates in functional magnetic resonance imaging: A multiverse analysis using the monetary incentive delay task

Imaging Neuroscience
Empirical studies reporting low test–retest reliability of individual blood oxygen-level dependent (BOLD) signal estimates in functional magnetic resonance imaging (fMRI) data have resurrected interest among cognitive neuroscientists in methods that may ...
Michael I. Demidenko, J. Mumford, R. Poldrack   +2 more
semanticscholar   +1 more source

A multiverse outside of the swampland

Physical Review D
A multiverse can arise from landscapes without de Sitter minima. It can be populated during a period of eternal inflation without trans-Planckian field excursions and without flat potentials. This multiverse can explain the values of the cosmological constant and of the weak scale. In the process of proving these statements, we derive a few simple, but
Raffaele Tito D’Agnolo, Paolo Mangini, Gabriele Rigo, Lian-Tao Wang   +3 more
openaire   +5 more sources

Measures for a transdimensional multiverse [PDF]

Journal of Cosmology and Astroparticle Physics, 2010
30 pages, 1 figure Minor revisions, reference ...
Alexander Vilenkin, Delia Schwartz-Perlov   +1 more
openaire   +4 more sources