Double field theory with matter and its cosmological application

Lescano, Eric; Mirón-Granese, Nahuel (2023) Double field theory with matter and its cosmological application. Physical Review D, 107 (4). ISSN 2470-0010

	PDF - Published Version - article Available under License Creative Commons Attribution. Download (284kB)
	PDF - Submitted Version - article Available under License Creative Commons Attribution. Download (259kB)

Abstract

The phase space formulation of double field theory (DFT) indicates that statistical matter can be included in terms of (T-)duality multiplets. We propose the inclusion of a perfect fluid in the geometry of DFT through a generalized energy-momentum tensor written in terms of a DFT pressure, energy density, and velocity. The latter is an O(D,D) vector and satisfies two invariant constraints in agreement with the on-shell constraints for the generalized momentum. We compute the conservation laws associated to the energy-momentum tensor considering general DFT backgrounds. Then we study cosmological backgrounds and we find an expression for the DFT cosmological dynamics with the perfect fluid coupled. This proposal reproduces the equations of string cosmology with nontrivial fixed dilaton charge upon parametrization of the DFT Einstein equations.

Item Type:	Article
Uncontrolled Keywords:	Higher-dimensional field theories; String dualities; Supergravity
Subjects:	NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions:	Theoretical Physics Division
Projects:	Project title Project leader Project code Project type Simetrije u kvantnoj gravitaciji-SYMM4QG Larisa Jonke; Marija Dimitrijevic Ciric IP-2019-04-4168 HRZZ
Depositing User:	Josipa Karadžole
Date Deposited:	24 Mar 2026 09:47
URI:	http://fulir.irb.hr/id/eprint/11420
DOI:	10.1103/PhysRevD.107.046016

Actions (login required)

View Item