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LOOKING AT THE COSMOLOGICAL CONSTANT FROM INFINITEVOLUME BULK
"... I briefly review the arguments why the braneworld models with infinitevolume extra dimensions could solve the cosmological constant problem, evading Weinberg’s nogo theorem. Then I discuss in detail the established properties of these models, as well as the features which should be studied further ..."
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I briefly review the arguments why the braneworld models with infinitevolume extra dimensions could solve the cosmological constant problem, evading Weinberg’s nogo theorem. Then I discuss in detail the established properties of these models, as well as the features which should be studied further in order to conclude whether these models can truly solve the problem.
Open String Gravity?
, 2004
"... Abstract: We present a new application of Boundary String Field Theory: calculating the inducedgravity action on a Dbrane. Using a simple quadratic tachyon potential to model a Dbrane fluctuating in the flat target space we derive the effective action in terms of the extrinsic curvature to all or ..."
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Abstract: We present a new application of Boundary String Field Theory: calculating the inducedgravity action on a Dbrane. Using a simple quadratic tachyon potential to model a Dbrane fluctuating in the flat target space we derive the effective action in terms of the extrinsic curvature to all orders in α ′. We identify both the BornInfeld structure as well as the EinsteinHilbert term at order α ′. This corroborates the conjectured existence of the latter term in the braneworld scenarios. Keywords: string theory, open string field theory, DBI, Dbranes. – 1 –
NYUTH04/08/05 Looking At The Cosmological Constant From Infinite–Volume Bulk
, 2004
"... I briefly review the arguments why the braneworld models with infinitevolume extra dimensions could solve the cosmological constant problem, evading Weinberg’s nogo theorem. Then I discuss in detail the established properties of these models, as well as the features which should be studied further ..."
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I briefly review the arguments why the braneworld models with infinitevolume extra dimensions could solve the cosmological constant problem, evading Weinberg’s nogo theorem. Then I discuss in detail the established properties of these models, as well as the features which should be studied further in order to conclude whether these models can truly solve the problem. This article is dedicated to the memory of Ian Kogan.