Results 41 to 50 of about 174,751,317 (275)

Benefits of Objective Collapse Models for Cosmology and Quantum Gravity [PDF]

open access: yes, 2013
We display a number of advantages of objective collapse theories for the resolution of long-standing problems in cosmology and quantum gravity. In particular, we examine applications of objective reduction models to three important issues: the origin of ...
Okon, Elias, Sudarsky, Daniel
core   +1 more source

Tensor networks for dynamic spacetimes

open access: yesJournal of High Energy Physics, 2017
Existing tensor network models of holography are limited to representing the geometry of constant time slices of static spacetimes. We study the possibility of describing the geometry of a dynamic spacetime using tensor networks.
A. May
doaj   +1 more source

Molecularly Dissipative Liquid Crystal Elastomer Foams for Impact and Vibration Attenuation

open access: yesAdvanced Functional Materials, EarlyView.
Liquid crystal elastomer foams integrate cellular deformation with mesogen reorientation to create a dual‐scale energy dissipation mechanism. Progressive pore collapse absorbs mechanical loads, while stress‐induced mesogen reorientation provides additional damping, resulting in reduced impact transmission and broadband suppression of vibrational ...
Subi Choi   +5 more
wiley   +1 more source

Quantum pre-geometry models for Quantum Gravity [PDF]

open access: yes, 2012
In this thesis we review the status of an approach to Quantum Gravity through lattice toy models, Quantum Graphity. In particular, we describe the two toy models introduced in the literature and describe with a certain level of details the results ...
Francesco, Caravelli
core  

Testing the holographic principle using lattice simulations

open access: yes, 2018
The lattice studies of maximally supersymmetric Yang-Mills (MSYM) theory at strong coupling and large N is important for verifying gauge/gravity duality.
Wiseman, Toby   +7 more
core   +1 more source

Lattice-free models of directed cell motility [PDF]

open access: yes, 2016
Directed cell migration often occurs when individual cells move in response to an external chemical stimulus. Cells can respond by moving in either the direction of increasing (chemoattraction) or decreasing (chemorepulsion) concentration.
Irons, C.   +3 more
core   +2 more sources

Topological fermion condensates from anomalies

open access: yesJournal of High Energy Physics, 2018
We show that a class of fermion theory formulated on a compact, curved manifold will generate a condensate whose magnitude is determined only by the volume and Euler characteristic of the space.
Simon Catterall   +2 more
doaj   +1 more source

Neuromorphic Devices for Extreme Environments: State‐Variable Reliability and Stabilization Strategies

open access: yesAdvanced Functional Materials, EarlyView.
Neuromorphic devices for extreme environments are interpreted through the physical states that store and process information. Radiation, temperature extremes, and vacuum can perturb vacancies, filaments, trapped charges, polarization, interfaces, and readout signals.
Taehyun Park   +7 more
wiley   +1 more source

From Gravity to Hopf Algebra Lattice Models [PDF]

open access: yes, 2019
This thesis addresses three different problems related to quantum gravity. In the first problem we will discuss the two natural ways to encode gravity through geometric structures. One is the much acclaimed Einstein's general relativity and the other is
Osumanu, Abdulmajid
core  

Edge length dynamics on graphs with applications to p-adic AdS/CFT

open access: yesJournal of High Energy Physics, 2017
We formulate a Euclidean theory of edge length dynamics based on a notion of Ricci curvature on graphs with variable edge lengths. In order to write an explicit form for the discrete analog of the Einstein-Hilbert action, we require that the graph should
Steven S. Gubser   +7 more
doaj   +1 more source

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