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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)

- F Larsen, G Gundersen, R Lopez, H Prydz
- Genomics
- 1992

CpG islands are short, dispersed regions of unmethylated DNA with a high frequency of CpG dinucleotides relative to the bulk genome. We have analyzed 375 genes and 58 pseudogenes from the human entries in the EMBL Database for the presence of CpG islands. All 240 islands identified are associated with genes, and almost all cover at least a part of one exon;… (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)

- Christoph Holzhey, Finn Larsen, Frank Wilczek
- 1994

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)

We calculate relativistic phase-shifts resulting from the large impact parameter scattering of 0-branes off p-branes within supergravity. Their full functional dependence on velocity agrees with that obtained by identifying the p-branes with D-branes in string theory. These processes are also described by 0-brane quantum mechanics, but only in 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)

- Luis A Pastene, Mutsuo Goto, +8 authors Per J Palsbøll
- Molecular ecology
- 2007

How do populations of highly mobile species inhabiting open environments become reproductively isolated and evolve into new species? We test the hypothesis that elevated ocean-surface temperatures can facilitate allopatry among pelagic populations and thus promote speciation. Oceanographic modelling has shown that increasing surface temperatures cause… (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