540 citations · 2.2k across the 49 of their papers we have counts for
22 papers · 1 filter
The Nature of Phantom Dark Energy and its Relation to Time Crystals
Laura Mersini-Houghton
In this letter we show that, at its fundamental level, phantom dark energy is a fluid made up of time crystals that permeate the fabric of space-time. In turn, any well-behaved sta…
Predictions of the Quantum Landscape Multiverse
Laura Mersini-Houghton
The 2015 Planck data release has placed tight constraints on the class of in ationary models allowed. The current best fit region favors concave downwards in ationary potentials, s…
Hawking radiation conference, book of proceedings
Laura Mersini-Houghton, Dillon N. Morse
Proceedings of the 'Hawking Radiation' conference in Stockholm, Sweden 2015. It includes a link to the video recording of the conference and all the talks, discussions, and communi…
Entropy of the Information Retrieved from Black Holes
Laura Mersini-Houghton
The retrieval of black hole information was recently presented in two interesting proposals in the 'Hawking Radiation' conference: a revised version by G. 't Hooft of a proposal he…
Cosmic bubble and domain wall instabilities II: Fracturing of colliding walls
Jonathan Braden, J. Richard Bond, Laura Mersini-Houghton
We study collisions between nearly planar domain walls including the effects of small initial nonplanar fluctuations. These perturbations represent the small fluctuations that must…
Back-reaction of the Hawking radiation flux on a gravitationally collapsing star II
Laura Mersini-Houghton
A star collapsing gravitationally into a black hole emits a flux of radiation, known as Hawking radiation. When the initial state of a quantum field on the background of the star,…
Birth of the Universe from the Multiverse, MG13
Laura Mersini-Houghton
This proceeding is based on a talk I gave at the 13th Marcel Grossmann Meeting in Stockholm Sweden.
Backreaction of Hawking Radiation on a Gravitationally Collapsing Star I: Black Holes?
Laura Mersini-Houghton
Particle creation leading to Hawking radiation is produced by the changing gravitational field of the collapsing star. The two main initial conditions in the far past placed on the…
Localization on the Landscape and Eternal Inflation
Laura Mersini-Houghton, Malcolm J. Perry
We investigate the validity of the assertion that eternal inflation populates the landscape of string theory. We verify that bubble solutions do not satisfy the Klein Gordon equati…
The End of Eternal Inflation
Laura Mersini-Houghton, Malcolm J Perry
We propose a new measure for eternal inflation that includes both conditions, large field fluctuations and smooth homogeneous domains, in the self reproducing probability estimate.…
'Tilting' the Universe with the Landscape Multiverse: The 'Dark' Flow
L. Mersini-Houghton, R. Holman
The theory for the selection of the initial state of the universe from the landscape multiverse predicts superhorizon inhomogeneities induced by nonlocal entanglement of our Hubble…
Birth of the Universe from the Multiverse
Laura Mersini-Houghton
It is fair to say that the deepest mystery in our understanding of nature is the birth of our universe. Much of the dilemma over the last decades comes from the extraordinarily sma…
Cosmological Avatars of the Landscape II: CMB and LSS Signatures
R. Holman, Laura Mersini-Houghton, Tomo Takahashi
This is the second paper in the series that confronts predictions of a model of the landscape with cosmological observations. We show here how the modifications of the Friedmann eq…
Cosmological Avatars of the Landscape I: Bracketing the SUSY Breaking Scale
R. Holman, L. Mersini-Houghton, Tomo Takahashi
We investigate the effects of quantum entanglement between our horizon patch and others due to the tracing out of long wavelength modes in the wavefunction of the Universe as defin…
Wavefunction of the Universe on the Landscape
Laura Mersini-Houghton
This talk reviews the proposal for dynamically selecting the most probable wavefunction of the universe propagating on the landscape of string theory, by means of quantum cosmology…
Why did the Universe Start from a Low Entropy State?
R. Holman, L. Mersini-Houghton
In previous work, we showed that the answer to the question posed in the title cannot be found within an equilibrium setting. The inclusion of {\em dynamical} backreaction effects…
A Fly in the SOUP
R. Holman, L. Mersini-Houghton
We investigate the Selection of Original Universe Proposal (SOUP) of Tye et al. and show that as it stands, this proposal is flawed. The corrections to the Euclidean gravity action…
Why the Universe Started from a Low Entropy State
R. Holman, L. Mersini-Houghton
We show that the inclusion of backreaction of massive long wavelengths imposes dynamical constraints on the allowed phase space of initial conditions for inflation, which results i…
Do We Have Evidence for New Physics in the Sky?
Laura Mersini-Houghton
Predicting signatures of string theory on cosmological observables is not sufficient. Often the observable effects string theory may impact upon the cosmological arena may equally…
Can we predict for the Non-SUSY sector of the Landscape ?
Laura Mersini-Houghton
We propose a new selection criteria for predicting the most probable wavefunction of the universe that propagates on the string landscape background, by studying its dynamics from…
Birth of the Universe from the Landscape of String Theory
Archil Kobakhidze, Laura Mersini-Houghton
We show that a unique, most probable and stable solution for the wavefunction of the universe, with a very small cosmological constant , can be predic…
Dark Energy May Probe String Theory
L. Mersini, M. Bastero-Gil
The problem of dark energy arises due to its self-gravitating properties. Therefore explaining vacuum energy may become a question for the realm of quantum gravity, that can be add…