Dynamics of false vacuum bubbles in Brans-Dicke theory

Journal Article · Sat Jan 01 00:00:00 EST 2011 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2011/01/005· OSTI ID:22275256

Lee, Bum-Hoon; Lee, Wonwoo ^[1]; Yeom, Dong-han ^[2]

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1. Department of Physics and BK21 Division and Center for Quantum Spacetime, Sogang University, Seoul 121-742 (Korea, Republic of)
2. Department of Physics, KAIST, Daejeon 305-701 (Korea, Republic of)

We study the dynamics of false vacuum bubbles in the Brans-Dicke theory of gravity by using the thin shell or thin wall approximation. We consider a false vacuum bubble that has a different value for the Brans-Dicke field between the inside false vacuum region and the outside true vacuum region. Within a certain limit of field values, the difference of field values makes the effective tension of the shell negative. This allows new expanding false vacuum bubbles to be seen by the outside observer, which are disallowed in Einstein gravity.

• OSTI ID: 22275256
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2011, Issue 01; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
APPROXIMATIONS
BRANES
BUBBLES
COSMOLOGICAL MODELS
COSMOLOGY
EINSTEIN FIELD EQUATIONS
GRAVITATION
VACUUM STATES