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- Per Kraus, Finn Larsen
- 2006

In the AdS/CFT correspondence one encounters theories that are not invariant under diffeomorphisms. In the boundary theory this is a gravitational anomaly, and can arise in 4k + 2 dimensions. In the bulk, there can be gravitational Chern-Simons terms which vary by a total derivative. We work out the holographic stress tensor for such theories, and… (More)

- Per Kraus, Finn Larsen
- 2008

We discuss higher derivative corrections to black hole entropy in theories that allow a near horizon AdS 3 × X geometry. In arbitrary theories with diffeomorphism invariance we show how to obtain the spacetime central charge in a simple way. Black hole entropy then follows from the Euclidean partition function, and we show that this gives agreement with… (More)

We present new rolling tachyon solutions describing the classical decay of D-branes. Our methods are simpler than those appearing in recent works, yet our results are exact in classical string theory. The role of pressure in the decay is studied using tachyon profiles with spatial variation. In this case the final state involves an array of codimension one… (More)

In statistical physics, useful notions of entropy are defined with respect to some coarse graining procedure over a microscopic model. Here we consider some special problems that arise when the microscopic model is taken to be relativistic quantum field theory. These problems are associated with the existence of an infinite number of degrees of freedom per… (More)

- Mirjam Cvetič, Finn Larsen
- 1998

We interpret the general rotating black holes in five dimensions as rotating black strings in six dimensions. In the near horizon limit the geometry is locally AdS 3 × S 3 , as in the nonrotating case. However, the global structure couples the AdS 3 and the S 3 , giving angular velocity to the S 3. The asymptotic geometry is exploited to count the… (More)

- Per Kraus, Finn Larsen, Ruud Siebelink
- 1999

The divergences of the gravitational action are analyzed for spacetimes that are asymptotically anti-de Sitter and asymptotically flat. The gravitational action is rendered finite using a local counterterm prescription, and the relation of this method to the traditional reference spacetime is discussed. For AdS, an iterative procedure is devised that… (More)

- Mirjam Cvetič, Finn Larsen
- 1997

We derive the wave equation for a minimally coupled scalar field in the background of a general rotating five-dimensional black hole. It is written in a

- Per Kraus, Finn Larsen
- 2006

We develop the spacetime aspects of the computation of partition functions for string/M-theory on AdS 3 × M. Subleading corrections to the semi-classical result are included systematically, laying the groundwork for comparison with CFT partition functions via the AdS 3 /CFT 2 correspondence. This leads to a better understanding of the " Farey tail "… (More)

- Finn Larsen
- 1997

The statistical mechanics of black holes arbitrarily far from ex-tremality is modeled by a gas of weakly interacting strings. As an effective low energy description of black holes the model provides a number of highly non-trivial consistency checks and predictions. Speculations on a fundamental origin of the model suggest surprising simplifications in… (More)

We consider cosmological particle production in 1+1 dimensional string theory. The process is described most efficiently in terms of anomalies, but we also discuss the explicit mode expansions. In matrix cosmology the usual vacuum ambiguity of quantum fields in time-dependent backgrounds is resolved by the underlying matrix model. This leads to a finite… (More)