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Inflationary trispectrum from graviton exchange
David Seery, Martin S. Sloth, Filippo Vernizzi
We compute the connected four-point correlation function of the primordial curvature perturbation generated during inflation with standard kinetic terms, where the correlation is e…
Observing trans-Planckian ripples in the primordial power spectrum with future large scale structure probes
Jan Hamann, Steen Hannestad, Martin S. Sloth +1
We revisit the issue of ripples in the primordial power spectra caused by trans-Planckian physics, and the potential for their detection by future cosmological probes. We find that…
How robust are inflation model and dark matter constraints from cosmological data?
Jan Hamann, Steen Hannestad, Martin S. Sloth +1
High-precision data from observation of the cosmic microwave background and the large scale structure of the universe provide very tight constraints on the effective parameters tha…
The inflationary trispectrum
David Seery, James E. Lidsey, Martin S. Sloth
We calculate the trispectrum of the primordial curvature perturbation generated by an epoch of slow-roll inflation in the early universe, and demonstrate that the non-gaussian sign…
On the one loop corrections to inflation and the CMB anisotropies
Martin S. Sloth
We investigate the one loop effective potential of inflation in a standard model of chaotic inflation. The leading one loop corrections to the effective inflaton potential are eval…
Searching for a holographic connection between dark energy and the low-l CMB multipoles
Kari Enqvist, Steen Hannestad, Martin S. Sloth
We consider the angular power spectrum in a finite universe with different boundary conditions and perform a fit to the CMB, LSS and supernova data. A finite universe could be the…