Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Loop quantum cosmology and the fine structure constant
AU - Sloan, David
PY - 2013
Y1 - 2013
N2 - The cosmological implications of introducing a variation to the fine structure ‘constant’, α are examined within the context of loop quantum cosmology. The evolution of α is described using the model introduced by Bekenstein, Sandvik, Barrow and Magueijo, in which a ghost scalar field produces the variation. The dynamics of the system are examined in flat and closed cosmological settings. Matter consisting of the scalar field and radiation are examined with a thermodynamically motivated coupling between the two, which can lead to a series of bounces induced by both the negative density effects of the ghost field and the loop effects.
AB - The cosmological implications of introducing a variation to the fine structure ‘constant’, α are examined within the context of loop quantum cosmology. The evolution of α is described using the model introduced by Bekenstein, Sandvik, Barrow and Magueijo, in which a ghost scalar field produces the variation. The dynamics of the system are examined in flat and closed cosmological settings. Matter consisting of the scalar field and radiation are examined with a thermodynamically motivated coupling between the two, which can lead to a series of bounces induced by both the negative density effects of the ghost field and the loop effects.
U2 - 10.1088/0264-9381/31/2/025014
DO - 10.1088/0264-9381/31/2/025014
M3 - Journal article
VL - 31
JO - Classical and Quantum Gravity
JF - Classical and Quantum Gravity
SN - 0264-9381
IS - 2
M1 - 025014
ER -