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Spacetime curvature and the Higgs stability during inflation.

- M. Herranen, T. Markkanen, S. Nurmi, A. Rajantie
- Physics, Medicine
- Physical review letters
- 11 July 2014

TLDR

De Sitter stability and coarse graining

- T. Markkanen
- Physics, Medicine
- The European physical journal. C, Particles and…
- 20 March 2017

TLDR

A simple method for one-loop renormalization in curved space-time

- T. Markkanen, A. Tranberg
- Physics
- 1 March 2013

We present a simple method for deriving the renormalization counterterms from the components of the energy-momentum tensor in curved space-time. This method allows control over the finite parts of… Expand

The 1-loop effective potential for the Standard Model in curved spacetime

- T. Markkanen, S. Nurmi, A. Rajantie, Stephen Stopyra
- Physics
- 5 April 2018

A bstractThe renormalisation group improved Standard Model effective potential in an arbitrary curved spacetime is computed to one loop order in perturbation theory. The loop corrections are computed… Expand

Non-minimal gravitational reheating during kination

- K. Dimopoulos, T. Markkanen
- Physics
- 20 March 2018

A new mechanism is presented which can reheat the Universe in non-oscillatory models of inflation, where the inflation period is followed by a period dominated by the kinetic density for the inflaton… Expand

Vacuum stability in the early universe and the backreaction of classical gravity

- T. Markkanen
- Physics, Medicine
- Philosophical Transactions of the Royal Society A…
- 11 July 2017

TLDR

Dark energy as a remnant of inflation and electroweak symmetry breaking

- K. Dimopoulos, T. Markkanen
- Physics
- 11 July 2018

A bstractIt is shown that dark energy can be obtained from the interplay of the Higgs boson and the inflaton. A key element is the realization that electroweak symmetry breaking can trigger a second… Expand

Scalar correlation functions in de Sitter space from the stochastic spectral expansion

- T. Markkanen, A. Rajantie, Stephen Stopyra, Tommi Tenkanen
- Physics
- 26 April 2019

We consider light scalar fields during inflation and show how the stochastic spectral expansion method can be used to calculate two-point correlation functions of an arbitrary local function of the… Expand

Light scalars on cosmological backgrounds

- T. Markkanen
- Physics
- 20 November 2017

A bstractWe study the behaviour of a light quartically self-interacting scalar field ϕ on curved backgrounds that may be described with the cosmological equation state parameter w. At leading order… Expand

Renormalization of the inflationary perturbations revisited

- T. Markkanen
- Physics
- 6 December 2017

In this work we clarify aspects of renormalization on curved backgrounds focussing on the potential ramifications on the amplitude of inflationary perturbations. We provide an alternate view of the… Expand

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