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We propose a cosmological model which exhibits the phenomenon of self-acceleration: the Universe is attracted to the phase of accelerated expansion at late times even in the absence of the cosmological constant. The self-acceleration is…

High Energy Physics - Theory · Physics 2008-04-15 D. S. Gorbunov , S. M. Sibiryakov

The problem of formation of generic structures in the Universe is addressed, whereby first the kinematics of inertial continua for coherent initial data is considered. The generalization to self--gravitating continua is outlined focused on…

Astrophysics · Physics 2007-05-23 T. Buchert

The topology of the universe is discussed in relation to the singularity problem. We explore the possibility that the initial state of the universe might have had a structure with 3-Klein bottle topology, which would lead to a model of a…

General Physics · Physics 2009-01-23 V. N. Yershov

Process Physics models reality as self-organising relational or semantic information using a self-referentially limited neural network model. This generalises the traditional non-process syntactical modelling of reality by taking account of…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Reginald T. Cahill

Quantum computers promise to efficiently solve important problems that are intractable on a conventional computer. Quantum computational algorithms have the potential to be an exciting new way of studying quantum cosmology. In quantum…

Quantum Physics · Physics 2019-12-03 Anirban Ganguly , Bikash K. Behera , Prasanta K. Panigrahi

Berry phases and gauge structures in parameter spaces of quantum systems are the foundation of a broad range of quantum effects such as quantum Hall effects and topological insulators. The gauge structures of interacting many-body systems,…

Quantum Physics · Physics 2017-11-09 Chon-Fai Kam , Ren-Bao Liu

We propose a new non-equilibrium model for spatial pattern formation on the basis of local information transfer. Unlike standard models of pattern formation it is not based on the Turing instability. Information is transmitted through the…

Statistical Mechanics · Physics 2007-05-23 Thimo Rohlf , Stefan Bornholdt

We provide detailed evidence for the claim that nonperturbative quantum gravity, defined through state sums of causal triangulated geometries, possesses a large-scale limit in which the dimension of spacetime is four and the dynamics of the…

High Energy Physics - Theory · Physics 2010-04-06 J. Ambjorn , J. Jurkiewicz , R. Loll

It has been argued that the spacetime of our universe can be accurately described by a perturbed conformal Newtonian metric, and hence even large density inhomogeneities in a dust universe can not change the observables predicted by the…

Astrophysics · Physics 2008-11-26 Edward W. Kolb , Valerio Marra , Sabino Matarrese

We consider devices with two inputs and two outputs, Alice and Bob each having access to one input and one output. To such a device we associate time-reverses by exchanging the roles of the inputs and the outputs. We find that there are…

Quantum Physics · Physics 2011-08-11 Bob Coecke , Raymond Lal

We provide a cosmological implementation of the evolutionary quantum gravity, describing an isotropic Universe, in the presence of a negative cosmological constant and a massive (preinflationary) scalar field. We demonstrate that the…

General Relativity and Quantum Cosmology · Physics 2015-06-22 Francesco Cianfrani , Giovanni Montani , Fabrizio Pittorino

Our current understanding of the Universe is established through the pristine measurements of structure in the cosmic microwave background (CMB) and the distribution and shapes of galaxies tracing the large scale structure (LSS) of the…

Cosmology and Nongalactic Astrophysics · Physics 2019-03-15 P. Daniel Meerburg , Daniel Green , Muntazir Abidi , Mustafa A. Amin , Peter Adshead , Zeeshan Ahmed , David Alonso , Behzad Ansarinejad , Robert Armstrong , Santiago Avila , Carlo Baccigalupi , Tobias Baldauf , Mario Ballardini , Kevin Bandura , Nicola Bartolo , Nicholas Battaglia , Daniel Baumann , Chetan Bavdhankar , José Luis Bernal , Florian Beutler , Matteo Biagetti , Colin Bischoff , Jonathan Blazek , J. Richard Bond , Julian Borrill , François R. Bouchet , Philip Bull , Cliff Burgess , Christian Byrnes , Erminia Calabrese , John E. Carlstrom , Emanuele Castorina , Anthony Challinor , Tzu-Ching Chang , Jonas Chaves-Montero , Xingang Chen , Christophe Yeche , Asantha Cooray , William Coulton , Thomas Crawford , Elisa Chisari , Francis-Yan Cyr-Racine , Guido D'Amico , Paolo de Bernardis , Axel de la Macorra , Olivier Doré , Adri Duivenvoorden , Joanna Dunkley , Cora Dvorkin , Alexander Eggemeier , Stephanie Escoffier , Tom Essinger-Hileman , Matteo Fasiello , Simone Ferraro , Raphael Flauger , Andreu Font-Ribera , Simon Foreman , Oliver Friedrich , Juan Garcia-Bellido , Martina Gerbino , Vera Gluscevic , Garrett Goon , Krzysztof M. Gorski , Jon E. Gudmundsson , Nikhel Gupta , Shaul Hanany , Will Handley , Adam J. Hawken , J. Colin Hill , Christopher M. Hirata , Renée Hložek , Gilbert Holder , Dragan Huterer , Marc Kamionkowski , Kirit S. Karkare , Ryan E. Keeley , William Kinney , Theodore Kisner , Jean-Paul Kneib , Lloyd Knox , Savvas M. Koushiappas , Ely D. Kovetz , Kazuya Koyama , Benjamin L'Huillier , Ofer Lahav , Massimiliano Lattanzi , Hayden Lee , Michele Liguori , Marilena Loverde , Mathew Madhavacheril , Juan Maldacena , M. C. David Marsh , Kiyoshi Masui , Sabino Matarrese , Liam McAllister , Jeff McMahon , Matthew McQuinn , Joel Meyers , Mehrdad Mirbabayi , Azadeh Moradinezhad Dizgah , Pavel Motloch , Suvodip Mukherjee , Julian B. Muñoz , Adam D. Myers , Johanna Nagy , Pavel Naselsky , Federico Nati , Newburgh , Alberto Nicolis , Michael D. Niemack , Gustavo Niz , Andrei Nomerotski , Lyman Page , Enrico Pajer , Hamsa Padmanabhan , Gonzalo A. Palma , Hiranya V. Peiris , Will J. Percival , Francesco Piacentni , Guilherme L. Pimentel , Levon Pogosian , Chanda Prescod-Weinstein , Clement Pryke , Giuseppe Puglisi , Benjamin Racine , Radek Stompor , Marco Raveri , Mathieu Remazeilles , Gracca Rocha , Ashley J. Ross , Graziano Rossi , John Ruhl , Misao Sasaki , Emmanuel Schaan , Alessandro Schillaci , Marcel Schmittfull , Neelima Sehgal , Leonardo Senatore , Hee-Jong Seo , Huanyuan Shan , Sarah Shandera , Blake D. Sherwin , Eva Silverstein , Sara Simon , Anže Slosar , Suzanne Staggs , Glenn Starkman , Albert Stebbins , Aritoki Suzuki , Eric R. Switzer , Peter Timbie , Andrew J. Tolley , Maurizio Tomasi , Matthieu Tristram , Mark Trodden , Yu-Dai Tsai , Cora Uhlemann , Caterina Umilta , Alexander van Engelen , M. Vargas-Magaña , Abigail Vieregg , Benjamin Wallisch , David Wands , Benjamin Wandelt , Yi Wang , Scott Watson , Mark Wise , W. L. K. Wu , Zhong-Zhi Xianyu , Weishuang Xu , Siavash Yasini , Sam Young , Duan Yutong , Matias Zaldarriaga , Michael Zemcov , Gong-Bo Zhao , Yi Zheng , Ningfeng Zhu

We consider a quantum mechanical system to model the effect of quantum fields on the evolution of the early universe. The system consists of an inverted oscillator bilinearly coupled to a set of harmonic oscillators. We point out that the…

General Relativity and Quantum Cosmology · Physics 2025-09-11 Ezequiel Lozano , Francisco D. Mazzitelli

The central idea of this work is the concept of prespace, a hypothetical structure that is postulated to underlie the fabric of space or space-time. I consider how such a structure could relate to space and space-time, and the implications…

Quantum Physics · Physics 2018-07-31 Martin Leckey

We find that the effective dimension of the Wasserstein space of energy eigenstates decreases as a quantum system becomes more chaotic. To demonstrate this, we study a quantum coupled harmonic oscillator system using Husimi…

High Energy Physics - Theory · Physics 2026-05-21 Koji Hashimoto , Norihiro Tanahashi , Kentaroh Yoshida

Temporal sampling does more than add another axis to the vector of observables. Instead, under the recognition that how objects change (and move) in time speaks directly to the physics underlying astronomical phenomena, next-generation…

Astrophysics · Physics 2009-06-25 J. S. Bloom , D. L. Starr , N. R. Butler , P. Nugent , M. Rischard , D. Eads , D. Poznanski

The dynamical properties of a quantum system can be profoundly influenced by its environment. Usually, the environment provokes decoherence and its action on the system can often be schematized by adding a noise term in the Hamiltonian.…

Quantum Physics · Physics 2015-06-26 S. Pascazio

It is demonstrated how a convenient choice of the mathematical structure of the quantum cosmology superspace, precisely the definition of a convenient regular state superspace and the restriction of the dynamics to this space, yields…

General Relativity and Quantum Cosmology · Physics 2010-11-19 Mario Castagnino

The model of the homogenous and isotropic universe is considered in which the coordinate system of reference is not defined by the matter but is a priori specified. The scale factor of the universe changes following the linear law. The…

Astrophysics · Physics 2007-05-23 D. L. Khokhlov

We construct a large class of spacetimes that are smoothly matched to homogeneous, spherically symmetric clouds of matter. The evolution of the clouds is left arbitrary to allow for the incorporation of modifications by quantum effects,…

General Relativity and Quantum Cosmology · Physics 2021-04-07 Tim Schmitz