Zobrazeno 1 - 10
of 47
pro vyhledávání: '"G. Le Denmat"'
Autor:
Maurizio Longo, Y. Gourghoulon, G. Le Denmat, S. Bonazzola, A. Giazotto, J. M. Aguirregabiria, V. Iafolla, P. h. Tourrenc, M. Capozzi, J. P. Duruisseau, A. Brillet, C. Bradaschia, C. N. Man, H. Bel, F. Fuligni, G. Rotoli, Fabrizio Barone, J. A. Marck, P. T. Manh, A. Marraud, O. Cregut, H. Kautzky, G. Natale, David H. Shoemaker, Marco Lops, Innocenzo M. Pinto, L. Di Fiore, D. Passuello, V. Montelatici, R. Del Fabbro, Patrice Hello, Thibault Damour, J-Y. Vinet, Guido Russo, L. Holloway, A. Di Virgilio, Leopoldo Milano
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 289:518-525
The status of advancement of the VIRGO Project is presented: the first-generation results from the Pisa seismic noise super attenuator give an upper limit to the noise transfer function of 2 × 10 −8 at 10 Hz. The upper limit to the absolute noise
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f95e288a6f993a28040caa83b852dbd1
https://doi.org/10.1016/0168-9002(90)91525-g
https://doi.org/10.1016/0168-9002(90)91525-g
Autor:
J. Gariel, G. Le Denmat
Publikováno v:
Classical and Quantum Gravity. 16:149-165
We propose a new time evolution law for the cosmological `constant' in a spatially flat (k = 0) Friedmann-Lemaitre-Robertson-Walker spacetime. From a thermodynamic model of the vacuum based upon work of Gibbons, Hawking and Davies, we obtain the law
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1185390d5972b22d561a0a838e55148a
https://doi.org/10.1088/0264-9381/16/1/011
https://doi.org/10.1088/0264-9381/16/1/011
Publikováno v:
Classical and Quantum Gravity. 14:1387-1391
In the framework of a spatially flat FLRW model, we account for dissipative effects in a simple fluid, namely bulk viscosity and matter creation. For an isentropic evolution, we study the wavefront speeds associated with the characteristics of the fl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e348a326a0f42cc779aa7570435ce9c
https://doi.org/10.1088/0264-9381/14/5/036
https://doi.org/10.1088/0264-9381/14/5/036
Publikováno v:
International Journal of Modern Physics D. :357-365
The total energy in a sphere containing an isotropic shear-free conducting heat fluid is studied in the frame of a spherically symmetric metric. Firstly, we examine the role played by the heat flux. Secondly, we point out the contribution to the ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43576cf5ce2065aeac888095d693d022
https://doi.org/10.1142/s0218271895000272
https://doi.org/10.1142/s0218271895000272
Autor:
G. le Denmat, J. Gariel
Publikováno v:
Physics Letters A. 200:11-16
The two distinct irreversible phenomena of matter creation and bulk viscosity are considered as independent, giving cross effects in relativistic extended irreversible thermodynamics, as applied to the primordial Friedman-Lemaitre-Robertson-Walker co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f74d7490f9fa63fb232e671b9d79e8f4
https://doi.org/10.1016/0375-9601(95)00123-k
https://doi.org/10.1016/0375-9601(95)00123-k
Publikováno v:
General Relativity and Gravitation
General Relativity and Gravitation, Springer Verlag, 2012, 44 (5), pp.1143-1162. ⟨10.1007/s10714-012-1331-x⟩
General Relativity and Gravitation, 2012, 44 (5), pp.1143-1162. ⟨10.1007/s10714-012-1331-x⟩
General Relativity and Gravitation, Springer Verlag, 2012, 44 (5), pp.1143-1162. ⟨10.1007/s10714-012-1331-x⟩
General Relativity and Gravitation, 2012, 44 (5), pp.1143-1162. ⟨10.1007/s10714-012-1331-x⟩
We study the dynamical instability of a spherically symmetric anisotropic fluid which collapses adiabatically under the condition of vanishing expansion scalar. The Newtonian and post Newtonian regimes are considered in detail. It is shown that withi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d665a7fbe75eda5fff2f862ca40c7346
https://hal.archives-ouvertes.fr/hal-02733685
https://hal.archives-ouvertes.fr/hal-02733685
Publikováno v:
AIP Conference Proceedings.
We present the main results of a model, namely the event‐horizon model, based on a thermodynamical approach for the law of Λ(t).We consider a phenomenological model where we give to the effective cosmological ‘constant’ Λ the physical meaning
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66b51e43770b51abe8ca3f478e1a4ffc
https://doi.org/10.1063/1.3462707
https://doi.org/10.1063/1.3462707
Publikováno v:
Annals of Physics. 220:1-17
We determine the characteristics for the system of conservation equations of a relativistic heat conducting fluid. The phenomenological thermodynamics model is based on the scalar axiom of local equilibrium yielding two equations of state for the pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c618c177ecc590fd0a792743f75acff
https://doi.org/10.1016/0003-4916(92)90323-e
https://doi.org/10.1016/0003-4916(92)90323-e
Publikováno v:
Physical Review D
Physical Review D, 2009, 79, pp.87505. ⟨10.1103/PhysRevD.79.087505⟩
Physical Review D, 2009, 79, pp.87505. ⟨10.1103/PhysRevD.79.087505⟩
In a recent paper a systematic study on shearing expansion-free spherically symmetric distributions was presented. As a particular case of such systems, the Skripkin model was mentioned, which corresponds to a nondissipative perfect fluid with a cons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7e872833aa0644291c0c86d8e47e789
http://arxiv.org/abs/0903.4774
http://arxiv.org/abs/0903.4774
Publikováno v:
Astrophysics and Space Science. 165:211-218
Recent calculations (analytical and semi-analytical), indicating that thermal effects in the relativistic regime may enhance the stability of spherically-symmetric models, are confirmed in a new example.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5b42a6f06ba4065129bfcb996e63527
https://doi.org/10.1007/bf00653289
https://doi.org/10.1007/bf00653289