On the Cosmological Constant Problem

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On the Cosmological Constant Problem

• Roland TRIAY
• Centre de Physique Théorique
• CNRS Université de Provence

Int. Journ. Mod. Phys. D 14,10,1667 (2005)
ICGA7 - Jhongli, Taiwan (2005)
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the Cosmological Constant
Einsteins biggest blunder
My prelude

• Observations
• Geometrical Status
• Modeling Gravitational Structures

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Observations - the 80th

• In the past
• Dynamics of galaxies in clusters
• Minimum age of the Universe

In the 80sHubble diagram (QSOs, BCGs), VLSS
(QSOs) (spatially) closed Universe
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Observations - Nowadays
Nowadays CMB temperature fluctuations Hubble
diagram (SuperNovæ)
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Observations-SNa
A.G. Riess etal astro-ph/0402512
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Observations - Nowadays
A.V Filippenko astro-ph/0410609
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Face to the L-Problem
The  Cosmological Constant From the Viewpoint
of String Th. E. Witten 2000 The
 Cosmological Constant Problems S. Weinberg
2000 The  Cosmological Constant  S. Carrol
2000 The Case for a Positive Cosmological
L-term  V. Sahni, A. Starobinsky 2000 The
 Cosmological Constant and Dark Energy P.J.E.
Peebles, B. Ratra 2002  On the Casimir Energy
Contribution to the Obs. Value of   I.O
Cherednikov 2002 The  Cosmological
Constant Problem J. W. Moffat
2003  Cosmological Constant Weight of the Vacuum
T. Padmanabham 2003
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Status of L?- ?Geometry)
The gravitational field and its sources are
characterized by
Schwarzschild solution - Newton approximation
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Dimensional Analysis of EE
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Modeling gravitational structures
(Modified) Newton law

• With L??? Gravitation becomes repulsive at
  large scale
• No L-effect in Solar neighborhood
• Small effect in the outerpart of the Galaxy
• Intervenes at the edge of LSC
• Homogeneity scale

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The cosmological Constant Problem
The contribution of quantum fluctuations

• A similar problem happens when one assumes
• Solar neighborhood
• Primordial epoch ( Vacuum dominate expansion)

Another version of the Cosmological Constant
Problem
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Understanding the acceleration of the
cosmological expansion
Rescaling !!!
Understanding Quantum Gravity !!!
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