Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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2003-12-23

Phys.Rev. D69 (2004) 106008

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, revtex, v2 references added

Scientific paper

10.1103/PhysRevD.69.106008

We stress that the dS/CFT correspondence should be formulated using unitary principal series representations of the de Sitter isometry group/conformal group, rather than highest-weight representations as originally proposed. These representations, however, are infinite-dimensional, and so do not account for the finite gravitational entropy of de Sitter space in a natural way. We then propose to replace the classical isometry group by a q-deformed version. This is carried out in detail for two-dimensional de Sitter and we find that the unitary principal series representations deform to finite-dimensional unitary representations of the quantum group. We believe this provides a promising microscopic framework to account for the Bekenstein-Hawking entropy of de Sitter space.

**Guijosa Alberto**

Physics – High Energy Physics – High Energy Physics - Theory

Scientist

**Lowe David A.**

Physics – High Energy Physics – High Energy Physics - Theory

Scientist

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