Results 31 to 40 of about 1,869,289 (152)

Tracing the Dark Matter Sheet in Phase Space

, 2012
The primordial velocity dispersion of dark matter is small compared to the velocities attained during structure formation. The initial density distribution is close to uniform and it occupies an initial sheet in phase space that is single valued in ...
Abel, Afshordi, Alard, Aragón-Calvo, Aragón-Calvo, Arnold, Ascasibar, Bernardeau, Bertschinger, Binney, Bryan, Buchert, Bullock, Colberg, Couchman, Cuperman, Diemand, Efstathiou, Frenk, Gibbs, Hahn, Hahn, Hoeft, Hogan, Kaehler, Lynden-Bell, Maciejewski, Navarro, Navarro, Neyrinck, Oliver Hahn, Peebles, Pelupessy, Ralf Kaehler, Rasio, Schaap, Shandarin, Shandarin, Sharma, Shen, Springel, Springel, Springel, Springel, Stiff, Taylor, Teyssier, Tom Abel, Tremaine, van de Weygaert, Vera-Ciro, Vogelsberger, Vogelsberger, Vogelsberger, Wadsley, Waldvogel, White, Wise, Zel'dovich   +58 more
core   +1 more source

Baryon phase-space density in heavy-ion collisions [PDF]

, 1999
The baryon phase-space density at mid-rapidity from central heavy-ion collisions is estimated from proton spectra with interferometry and deuteron coalescence measurements. It is found that the mid-rapidity phase-space density of baryons is significantly
A.Z. Mekjian, A.Z. Mekjian, B. Monreal, C.K. Gelbke, D. Ferenc, D.H. Boal, F. Becattini, Fuqiang Wang, G.F. Bertsch, G.F. Bertsch, H. Appelshäuser, H. Appelshäuser, H. Appelshäuser, H. Beker, H. Dobler, H. Sorge, I. Ya. Pomeranchuk, I.G. Bearden, I.G. Bearden, I.G. Bearden, J. Barrette, J. Barrette, J. Cleymans, J.L. Nagle, K. Kaimi, K. Werner, L. Ahle, L. Ahle, L.P. Csernai, M.D. Baker, N. Xu, O.E. Vossnack, P. Braun-Munzinger, P. Braun-Munzinger, P. Braun-Munzinger, P.J. Siemens, P.J. Siemens, R. Scheibl, S. Nagamiya, S. Voloshin, T. Alexopoulos, W.J. Llope   +41 more
core   +2 more sources

Quantum to classical parton evolution in the QGP [PDF]

EPJ Web of Conferences
We study the time evolution of the density matrix of a high energy quark in the presence of a dense QCD background that is modeled as a stochastic Gaussian color field.
Barata João, Blaizot Jean-Paul, Mehtar-Tani Yacine   +2 more
doaj   +1 more source

Dark matter halo's and self similarity

, 2012
This papers explores the self similar solutions of the Vlasov-Poisson system and their relation to the gravitational collapse of dynamically cold systems.
Afshordi, Arad, Bertschinger, Binney, Birdsall, C. Alard, Dalal, Dehnen, Donato, Duffy, Fillmore, Gunn, Lancellotti, Lithwick, Ludlow, Mohayaee, Navarro, Navarro, Nusser, Salucci, Schulz, Sikivie, Stadel, Taylor, Vogelsberger, Vogelsberger, Vogelsberger, White, Wojtak, Zukin, Zukin   +30 more
core   +1 more source

Remarks on the Formulation of Quantum Mechanics on Noncommutative Phase Spaces [PDF]

, 2006
We consider the probabilistic description of nonrelativistic, spinless one-particle classical mechanics, and immerse the particle in a deformed noncommutative phase space in which position coordinates do not commute among themselves and also with ...
A. Eftekharzadeh, B. Chakraborty, Balasundaram Muthukumar, D. Fairlie, E.P. Wigner in, F. Riesz, G. Landi, G.D. Barbosa, H. Awata, J.C. Várilly, J.E. Moyal, J.G. Kruger, L. Castellani, M.Khalkhali, N. Seiberg, R.Courant, S.-C. Jing, V.Ginzburg   +17 more
core   +4 more sources

Classical Phase Space Density for the Relativistic Hydrogen Atom

, 2005
Quantum mechanics is considered to arise from an underlying classical structure (``hidden variable theory'', ``sub-quantum mechanics''), where quantum fluctuations follow from a physical noise mechanism.
Nieuwenhuizen, Th. M.
core   +2 more sources

Theoretical dark matter halo kinematics and triaxial shape [PDF]

, 2012
In a recent paper, Salvador-Sol\'e et al. (2012) have derived the typical inner structure of dark matter haloes from that of peaks in the initial random Gaussian density field, determined by the power-spectrum of density perturbations characterising the ...
Alberto Manrique, Allgood, Ascasibar, Avila Reese, Bailin, Bardeen, Basilakos, Bertschinger, Bett, Cole, Dehnen, Dekel, Del Popolo, Doroshkevich, Dubinski, Eduard Salvador-Solé, Einasto, Faltenbacher, Franx, Frenk, Guillermo González-Casado, Hansen, Hansen, Hayashi, Jing, Kasun, Lee, Lemson, Ludlow, Lynden Bell, Macciò, Manrique, Manrique, Merritt, Merritt, Navarro, Navarro, Navarro, Nusser, Patiri, Ragone-Figueroa, Rasia, Rossi, Salvador-Sole, Salvador-Solé, Salvador-Solé, Sinue Serra, Stadel, Subramanian, Syer, Taylor, Vass, Vera-Ciro, Wang, Warren, Zeldovich   +55 more
core   +3 more sources

Evolution of Phase-Space Density in Dark Matter Halos

, 2007
The evolution of the phase-space density profile in dark matter (DM) halos is investigated by means of constrained simulations, designed to control the merging history of a given DM halo.
Clayton Heller, Efstathiou G., Emilio Romano‐Diaz, Isaac Shlosman, White S. D. M., Yehuda Hoffman   +5 more
core   +1 more source

Adiabatically changing the phase-space density of a trapped Bose gas [PDF]

, 1996
We show that the degeneracy parameter of a trapped Bose gas can be changed adiabatically in a reversible way, both in the Boltzmann regime and in the degenerate Bose regime.
A. Lagendijk, A. Mosk, C. C. Bradley, C. C. Bradley, C. E. Wieman, C. G. Townsend, D. S. Jin, F. Reif, H. F. Hess, H. T. C. Stoof, J. T. M. Walraven, J. T. M. Walraven, K. B. Davis, K. Huang, M. H. Anderson, M. R. Andrews, M. W. Reynolds, M. Weidemüller, O. J. Luiten, O. J. Luiten, P. W. H. Pinkse, R. van Roijen, T. W. Hijmans, T. W. Hijmans, V. Bagnato, W. Ketterle   +25 more
core   +3 more sources

Visualization of cosmological density fluctuations with phase space analysis: case study: Brans–Dicke theory

European Physical Journal C: Particles and Fields, 2019
Cosmological perturbation theory is a powerful tool to understanding the large-scale structure of the Universe. However, the set of field equations describes the general linear perturbations for the cosmological models is highly nonlinear and coupled ...
Amin Salehi, Hossein Farajollahi
doaj   +1 more source