Carsten van de Bruck University of Sheffield

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Saturday, 3 July 2010

Here we consider two mechanisms

to “hide” the scalar field(s):

Damour-Polyakov (DP) mechanism

(Damour&Polyakov, Nucl.Phys.B 423, 532 (1994))

The Chameleon Mechanism

(Khoury&Weltman, Phys.Rev.D 69, 044026 (2004))

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Saturday, 3 July 2010 Here we consider two mechanisms to “hide” the scalar field(s): Damour-Polyakov (DP) mechanism (Damour&Polyakov, Nucl.Phys.B 423, 532 (1994)) The Chameleon Mechanism (Khoury&Weltman, Phys.Rev.D 69, 044026 (2004))

Page 1 and 2: Saturday, 3 July 2010 The dilaton a
Page 6 and 7: Saturday, 3 July 2010 Chameleon mec
Page 8 and 9: The coupling, usually given by β =
Page 11 and 12: The Damour-Polyakov mechanism This
Page 15: Due to the non-canonical nature of
Page 19 and 20: Value of A 2 × 10 5 Saturday, 3 Ju
Page 21: Saturday, 3 July 2010 Interaction r
Page 24 and 25: GR Relative Modified Gravity Parame
Page 26 and 27: ISW Slip Parameter, I m Saturday,
Page 28 and 29: Weak Lensing Slip Parameter, m Sa
Page 30: Saturday, 3 July 2010 Conclusions C

Carsten van de Bruck University of Sheffield

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