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Gravity Waves and Linear Inflation from Axion Monodromy

- L. McAllister, E. Silverstein, A. Westphal
- Physics
- 5 August 2008

Wrapped branes in string compactifications introduce a monodromy that extends the field range of individual closed-string axions to beyond the Planck scale. Furthermore, approximate shift symmetries… Expand

Monodromy in the CMB: Gravity Waves and String Inflation

- E. Silverstein, A. Westphal
- Physics
- 21 March 2008

We present a simple mechanism for obtaining large-field inflation, and hence a gravitational wave signature, from string theory compactified on twisted tori. For nil manifolds, we obtain a leading… Expand

Oscillations in the CMB from Axion Monodromy Inflation

- R. Flauger, L. McAllister, E. Pajer, A. Westphal, Gang Xu
- Physics
- 17 July 2009

We study the CMB observables in axion monodromy inflation. These well-motivated scenarios for inflation in string theory have monomial potentials over super-Planckian field ranges, with superimposed… Expand

Quantum states of neutrons in the Earth's gravitational field

- V. Nesvizhevsky, H. Börner, +8 authors A. Strelkov
- Physics, MedicineNature
- 17 January 2002

TLDR

Toward de Sitter space from ten dimensions

- Jakob Moritz, A. Retolaza, A. Westphal
- Physics
- 22 February 2018

Using a 10D lift of non-perturbative volume stabilization in type IIB string theory we study the limitations for obtaining de Sitter vacua. Based on this we find that the simplest KKLT vacua with a… Expand

Simple exercises to flatten your potential

- Xi Dong, B. Horn, E. Silverstein, A. Westphal
- Physics
- 19 November 2010

We show how backreaction of the inflaton potential energy on heavy scalar fields can flatten the inflationary potential, as the heavy fields adjust to their most energetically favorable… Expand

Axion monodromy and the weak gravity conjecture

- A. Hebecker, Fabrizio Rompineve, A. Westphal
- Physics
- 11 December 2015

A bstractAxions with broken discrete shift symmetry (axion monodromy) have recently played a central role both in the discussion of inflation and the ‘relaxion’ approach to the hierarchy problem. We… Expand

Building an explicit de Sitter

- J. Louis, M. Rummel, R. Valandro, A. Westphal
- Physics
- 15 August 2012

A bstractWe construct an explicit example of a de Sitter vacuum in type IIB string theory that realizes the proposal of Kähler uplifting. As the large volume limit in this method depends on the rank… Expand

The powers of monodromy

- L. McAllister, E. Silverstein, A. Westphal, T. Wrase
- Physics
- 14 May 2014

A bstractFlux couplings to string theory axions yield super-Planckian field ranges along which the axion potential energy grows. At the same time, other aspects of the physics remain essentially… Expand

Measurement of quantum states of neutrons in the earth's gravitational field

- V. Nesvizhevsky, H. Boerner, +23 authors Moscow
- Physics
- 13 May 2003

The lowest stationary quantum state of neutrons in the Earth's gravitational field is identified in the measurement of neutron transmission between a horizontal mirror on the bottom and an… Expand

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