Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Arturo Stabile"'
Autor:
Arturo Stabile, Salvatore Capozziello
Publikováno v:
Galaxies, Vol 2, Iss 4, Pp 520-576 (2014)
Starting from the weak field limit, we discuss astrophysical applications of Extended Theories of Gravity where higher order curvature invariants and scalar fields are considered by generalizing the Hilbert-Einstein action linear in the Ricci curvatu
Externí odkaz:
https://doaj.org/article/3a7a1f2e1dc34bc993490f3e9c733ca0
Publikováno v:
Physical Review D. 95
We study the Casimir vacuum energy density and the Casimir pressure for a massless scalar field confined between two nearby parallel plates in a slightly curved, static spacetime background, employing the weak field approximation in the framework of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::121f47bf131996f9275d63ab684b02c2
https://doi.org/10.1103/physrevd.95.084019
https://doi.org/10.1103/physrevd.95.084019
Publikováno v:
Physics Letters B. 686:79-83
Recently, a strong debate has been pursued about the Newtonian limit (i.e. small velocity and weak field) of fourth order gravity models. According to some authors, the Newtonian limit of f ( R ) -gravity is equivalent to the one of Brans–Dicke gra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b344476184581f2d60f4209da72d0f80
https://doi.org/10.1016/j.physletb.2010.02.042
https://doi.org/10.1016/j.physletb.2010.02.042
Publikováno v:
Lambiase, G, Sakellariadou, M, Stabile, A & Stabile, A 2015, ' Astrophysical constraints on extended gravity models ', Journal Of Cosmology And Astroparticle Physics, vol. 2015, no. 7, 003 . https://doi.org/10.1088/1475-7516/2015/07/003
We investigate the propagation of gravitational waves in the context of fourth order gravity nonminimally coupled to a massive scalar field. Using the damping of the orbital period of coalescing stellar binary systems, we impose constraints on the fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25c6283d991d80393e7f356db524ccdc
https://kclpure.kcl.ac.uk/ws/files/51898326/1503.08751.pdf
https://kclpure.kcl.ac.uk/ws/files/51898326/1503.08751.pdf
Autor:
Salvatore Capozziello, Arturo Stabile
Publikováno v:
Galaxies, Vol 2, Iss 4, Pp 520-576 (2014)
Starting from the weak field limit, we discuss astrophysical applications of Extended Theories of Gravity where higher order curvature invariants and scalar fields are considered by generalizing the Hilbert-Einstein action linear in the Ricci curvatu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83ed7931bf3ac51a02bccc3815575b56
http://arxiv.org/abs/1411.3143
http://arxiv.org/abs/1411.3143
Autor:
Arturo Stabile, Stefania Petracca
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 17, Iss 8, p 083503 (2014)
The possible use of open cell conductive foams in high synchrotron radiation particle accelerators is considered. Available materials and modeling tools are reviewed, potential pros and cons are discussed, and preliminary conclusions are drawn.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c03f94cf592200829f6f1277c691bac3
https://doaj.org/article/308cbe923dc044508ec8c9803158c990
https://doaj.org/article/308cbe923dc044508ec8c9803158c990
Autor:
Stefania Petracca, Arturo Stabile
Publikováno v:
Proceedings of the 12th Asia Pacific Physics Conference (APPC12).
Molecular gas desorption from the beam-pipe wall due to synchrotron radiation has been a major solved issue in the design of the LHC [1]. Nuclear scattering in the desorbed gas may limit the beam luminositity lifetime, and produce high energy protons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfa45a274dfb00036eb51c65b91d50e3
https://doi.org/10.7566/jpscp.1.014003
https://doi.org/10.7566/jpscp.1.014003
Publikováno v:
Università degli Studi di Napoli Federico II
We formally discuss the post-Minkowskian limit of $f(R)$-gravity without adopting conformal transformations but developing all the calculations in the original Jordan frame. It is shown that such an approach gives rise, in general, together with the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84a3a5f571f357c5492eeabcf54351b0
http://hdl.handle.net/11588/365537
http://hdl.handle.net/11588/365537
A general analytic procedure is developed to deal with the Newtonian limit of $f(R)$ gravity. A discussion comparing the Newtonian and the post-Newtonian limit of these models is proposed in order to point out the differences between the two approach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::091f37fdb60a911a8f0dcf0d84fe2297
http://hdl.handle.net/11588/351415
http://hdl.handle.net/11588/351415
Publikováno v:
Classical and Quantum Gravity. 27:165008
Axially symmetric solutions for f (R)-gravity can be derived starting from exact spherically sym- metric solutions achieved by Noether symmetries. The method takes advantage of a complex coordi- nate transformation previously developed by Newman and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4daa4620977563b2597e8ec7de255cc
https://doi.org/10.1088/0264-9381/27/16/165008
https://doi.org/10.1088/0264-9381/27/16/165008