Double field theory with matter and its cosmological application

Lescano, Eric; Mirón-Granese, Nahuel

doi:10.1103/physrevd.107.046016

Phys. Rev. D

2023

DOI: 10.1103/physrevd.107.046016

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Double field theory with matter and its cosmological application

Eric Lescano

Nahuel Mirón-Granese

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Cited by 8 publications

References 43 publications

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Non-relativistic limits of bosonic and heterotic Double Field Theory

Lescano,

Osten

2024

J. High Energ. Phys.

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The known stringy non-relativistic (NR) limit of the universal NS-NS sector of supergravity has a finite Lagrangian due to non-trivial cancellations of divergent parts coming from the metric and the B-field. We demonstrate that in Double Field Theory (DFT) and generalised geometry these cancellations already happen at the level of the generalised metric, which is convergent in the limit c → ∞, implying that the NR limit can be imposed before solving the strong constraint. We present the c-expansion of the generalised metric, which reproduces the Non-Riemannian formulation of DFT at the (finite) leading order, and the c-expansion of the generalised frame, which contains divergences. We also extend this approach to the non-Abelian gauge field of Heterotic DFT assuming a convergent expansion for the O(D, D + n) generalised metric. From this proposal, we derive a novel c-expansion for the bosonic part of the heterotic supergravity which is, by construction, compatible with O(D, D)-symmetry.

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Non-relativistic limits of bosonic and heterotic Double Field Theory

Lescano,

Osten

2024

J. High Energ. Phys.

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Late-time cosmology without dark sector but with closed string massless sector

Lee,

Park,

Velasco-Sevilla

et al. 2025

Physics Letters B

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Double field theory with matter and the generalized Bergshoeff–de Roo identification

Lescano

Mirón-Granese

2023

Phys. Rev. D

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Double field theory with matter and its cosmological application

Cited by 8 publications

References 43 publications

Non-relativistic limits of bosonic and heterotic Double Field Theory

Non-relativistic limits of bosonic and heterotic Double Field Theory

Late-time cosmology without dark sector but with closed string massless sector

Double field theory with matter and the generalized Bergshoeff–de Roo identification

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