Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Wolung Lee"'
Recently, the observed equation of state for dark energy appears to favor values below $-1$. The tendency implies that the nature of dark energy may be quite different from that of the cosmological constant. In view of the adjustment on the equation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::224c25270a472d3f78ceebdbc0c664f8
Publikováno v:
Physics of the Dark Universe. 19:12-20
We investigate the clustering effect of dark energy (DE) in the formation of galaxy clusters using the spherical collapse model. Assuming a fully clustered DE component, the spherical overdense region is treated as an isolated system which conserves
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c795d2dbbb280318e5a7decf9928d7cd
https://doi.org/10.1016/j.dark.2017.10.006
https://doi.org/10.1016/j.dark.2017.10.006
Publikováno v:
Physical Review D. 99
We study the growth of superhorizon modes in the curvature perturbation during an ultra-slow-roll or a large-$\eta$ phase in single-field inflation. In a simple toy model, we derive the two-point correlation function of the curvature perturbation and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5f02d8217b8721ac96be609e79793b9
https://doi.org/10.1103/physrevd.99.063524
https://doi.org/10.1103/physrevd.99.063524
Publikováno v:
Journal of High Energy Physics
Trapped inflation has been proposed to provide a successful inflation with a steep potential. We discuss the formation of primordial black holes in the trapped inflationary scenario. We show that primordial black holes are naturally produced during i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b65be9bf53efbf262cbd34e28f62c3a
https://doi.org/10.1007/jhep02(2017)008
https://doi.org/10.1007/jhep02(2017)008
Publikováno v:
International Journal of Modern Physics: Conference Series. 12:264-271
Contrary to the conventional wisdom, we find that it is plausible to generate primordial magnetic seed fields via spinodal instability efficiently during cosmic inflation provided that a fast-roll stage is involved before the inflaton entering into t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::939f948cde8cf458620f94c527728a03
https://doi.org/10.1142/s2010194512006460
https://doi.org/10.1142/s2010194512006460
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2018:001-001
In the axion monodromy inflation, the inflation is driven by the axion with super-Planckian field values in a monomial potential with superimposed sinusoidal modulations. The coupling of the axion to massless gauge fields can induce copious particle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1aa0cf215398cebe09580036cce94777
https://doi.org/10.1088/1475-7516/2018/07/001
https://doi.org/10.1088/1475-7516/2018/07/001
Publikováno v:
Modern Physics Letters A. 19:1089-1092
We study the time variation of the fine structure constant driven by quintessential dark energy which is coupled to electromagnetism. By employing phenomenological quintessential models which provide the scalar field with maximal dynamics and satisfy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e900c3ae42a40daa072babe2bcf8a9a
https://doi.org/10.1142/s0217732304014410
https://doi.org/10.1142/s0217732304014410
Autor:
Wolung Lee, Long Long Feng
Publikováno v:
International Journal of Modern Physics D. 10:961-969
In this paper, we present an investigation of the Berry phase that a photon acquired during its propagating through a gravitational field produced by a Kerr black hole. Starting from the Maxwell equation in Kerr–Schild metric form of Kerr black hol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11dcf8fba2df346278d7e5202e79be4c
https://doi.org/10.1142/s0218271801001402
https://doi.org/10.1142/s0218271801001402
Publikováno v:
International Journal of Modern Physics D. :731-738
We show that scale-scale correlations are a generic feature of slow-roll inflation theories. These correlations result from the long-time tails characteristic of the time dependent correlations because the long wavelength density perturbation modes a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5684cea239bf841fdc0637abf07f43a
https://doi.org/10.1142/s0218271899000547
https://doi.org/10.1142/s0218271899000547
Publikováno v:
Physical Review D. 84
We develop a Lagrangian approach based on the influence functional method so as to derive self-consistently the Langevin equation for the inflaton field in the presence of trapping points along the inflaton trajectory. The Langevin equation exhibits
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a836a7431fa9689f48495e33a1237f5
https://doi.org/10.1103/physrevd.84.063527
https://doi.org/10.1103/physrevd.84.063527