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Peer-reviewedCC BY 4.0Physical Review D

Degrees of freedom of multiway junctions in three dimensional gravity

  • Avik Chakraborty
  • Tanay Kibe
  • Martín Molina
  • Ayan Mukhopadhyay
  • Giuseppe Policastro
Open at sourcePDFDOICite

Abstract

We demonstrate that n-way junctions in three dimensional gravity correspond to coupled n−1 strings each satisfying the Nambu-Goto equation in the smoothened background, and with sources consisting of Monge-Ampère like terms which couple the strings. For n≥ 3, these n−1 degrees of freedom survive the tensionless limit implying that matter-like behavior can arise out of pure gravity. We interpret these stringy degrees of freedom of gravitational junctions holographically in terms of wavepackets which collectively undergo perfect reflection at the multi-interface in the dual conformal field theory.

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Cite

BibTeXRIS
BibTeX
@article{chakraborty2026degrees,
  title = {{Degrees of freedom of multiway junctions in three dimensional gravity}},
  author = {Avik Chakraborty and Tanay Kibe and Martín Molina and Ayan Mukhopadhyay and Giuseppe Policastro},
  journal = {Physical Review D},
  year = {2026},
  month = nov,
  doi = {10.1103/yy6l-1b4b},
  eprint = {2509.20437},
  archivePrefix = {arXiv},
  url = {https://hal.science/hal-05370671v1},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Degrees of freedom of multiway junctions in three dimensional gravity
AU  - Avik Chakraborty
AU  - Tanay Kibe
AU  - Martín Molina
AU  - Ayan Mukhopadhyay
AU  - Giuseppe Policastro
PY  - 2026
DA  - 2026/11/04
JO  - Physical Review D
DO  - 10.1103/yy6l-1b4b
UR  - https://hal.science/hal-05370671v1
AB  - We demonstrate that n-way junctions in three dimensional gravity correspond to coupled n−1 strings each satisfying the Nambu-Goto equation in the smoothened background, and with sources consisting of Monge-Ampère like terms which couple the strings. For n≥ 3, these n−1 degrees of freedom survive the tensionless limit implying that matter-like behavior can arise out of pure gravity. We interpret these stringy degrees of freedom of gravitational junctions holographically in terms of wavepackets which collectively undergo perfect reflection at the multi-interface in the dual conformal field theory.
SN  - 2470-0010
SN  - 2470-0029
ER  -