Volume 100, Number 4, November 2012
|Number of page(s)||6|
|Section||Geophysics, Astronomy and Astrophysics|
|Published online||29 November 2012|
The Hawking temperature in the context of dark energy
1 Department of Physics, Ramakrishna Mission Vivekananda University - P. O. Belur Math, Howrah-711202, West Bengal, India
2 Department of Physics, Prabhat Kumar College - Contai, Purba Medinipur-721401, West Bengal, India
Received: 18 June 2012
Accepted: 5 November 2012
An emergent-gravity metric incorporating k-essence scalar fields ϕ having a Born-Infeld–type Lagrangian is mapped into a metric whose structure is similar to that of a blackhole of large mass M that has swallowed a global monopole. However, here the field is not that of a monopole but rather that of a k-essence scalar field. If ϕemergent are the solutions of the emergent-gravity equations of motion under cosmological boundary conditions at ∞, then for the rescaled field has exact correspondence with ϕ with ϕ(r,t) = ϕ1(r) + ϕ2(t). The Hawking temperature of this metric is , taking the speed of light c = 1. Here is the kinetic energy of the k-essence field ϕ and K is always less than unity, kB is the Boltzmann constant. This is phenomenologically interesting in the context of Belgiorno et al.'s gravitational analogue experiment.
PACS: 95.36.+x – Dark energy / 98.80.-k – Cosmology
© EPLA, 2012
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