Holography and a variable cosmological constant (CROSBI ID 106610)
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Podaci o odgovornosti
Horvat, Raul
engleski
Holography and a variable cosmological constant
An effective local quantum field theory with UV and IR cutoffs correlated in accordance with holographic entropy bounds is capable of rendering the cosmological constant (CC) stable against quantum corrections. By setting an IR cutoff to length scales relevant to cosmology, one easily obtains the currently observed rho_Lambda ~ 10^{;-47}; GeV4, thus alleviating the CC problem. It is argued that scaling behavior of the CC in these scenarios implies an interaction of the CC with matter sector or a time-dependent gravitational constant, to accommodate the observational data.
holographic principle; cosmology; cosmological
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Podaci o izdanju
70
2004.
087301-1-087301--x
objavljeno
1550-7998