Results 61 to 70 of about 960,656 (258)

On the phase diagram of 2d Lorentzian quantum gravity [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2000
LATTICE99(gravity), 3 pages, espcrc2.sty, simulations available at http://www.nbi.dk/~ambjorn/lqg2/
Ambjørn, Jan   +2 more
openaire   +5 more sources

A new class of group field theories for 1st order discrete quantum gravity [PDF]

open access: yes, 2008
Group Field Theories, a generalization of matrix models for 2d gravity, represent a 2nd quantization of both loop quantum gravity and simplicial quantum gravity.
Afd Theoretical Physics (ITF)   +3 more
core  

Poisson-sigma model for 2D gravity with non-metricity

open access: yes, 2007
We present a Poisson-sigma model describing general 2D dilaton gravity with non-metricity, torsion and curvature. It involves three arbitrary functions of the dilaton field, two of which are well known from metric compatible theories, while the third one
Grumiller, D., Adak, Muzaffer.
core   +1 more source

International trade without CES : estimating translog gravity [PDF]

open access: yes, 2012
This paper derives a micro-founded gravity equation based on a translog demand system that allows for flexible substitution patterns across goods. In contrast to the standard CES-based gravity equation, translog gravity generates an endogenous trade cost
Novy, Dennis
core   +1 more source

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow   +9 more
wiley   +1 more source

2D QUANTUM GRAVITY: THREE STATES OF SURFACES [PDF]

open access: yesInternational Journal of Modern Physics A, 1998
Two-dimensional random surfaces are studied numerically by the dynamical triangulation method. In order to generate various kinds of random surfaces, two higher derivative terms are added to the action. The structures of surfaces, two higher derivative terms are added to the action. The structures of surfaces in the two-dimensional parameter space are
Fujitsu, A., Tsuda, N., Yukawa, T.
openaire   +3 more sources

Electrocapillary Modulated Interfacial Tension Amplifies Liquid Metal Transduction

open access: yesAdvanced Functional Materials, EarlyView.
This study presented an electrocapillary‐enhanced magnetohydrodynamic pumping strategy that harnesses the Lorentz force and interfacial tension modulation of liquid metal droplets to achieve amplified fluidic power. The system enabled low‐voltage, self‐oscillating fluidic transduction with enhanced pressure and flow generation, supporting compact ...
Saba Firouznia   +3 more
wiley   +1 more source

Bulk Correlation Functions in 2d Quantum Gravity [PDF]

open access: yesTheoretical and Mathematical Physics, 2006
We compute bulk 3- and 4-point tachyon correlators in the 2d Liouville gravity with non-rational matter central charge c<1, following and comparing two approaches. The continuous CFT approach exploits the action on the tachyons of the ground ring generators deformed by Liouville and matter ``screening charges''.
Kostov, I. K., Petkova, V. B.
openaire   +3 more sources

Extended 2D generalized dilaton gravity theories

open access: yes, 2008
We show that an anomaly-free description of matter in (1+1) dimensions requires a deformation of the 2D relativity principle, which introduces a non-trivial centre in the 2D Poincare algebra.
R O de Mello   +2 more
core   +1 more source

SYK correlators from 2D Liouville-de Sitter gravity

open access: yesJournal of High Energy Physics
We introduce and study a candidate gravity dual to the double scaled SYK model in the form of an exactly soluble 2D de Sitter gravity model consisting of two spacelike Liouville CFTs with complex central charge adding up to c + + c − = 26.
Herman Verlinde, Mengyang Zhang
doaj   +1 more source

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