Skip to content
DraconiticResearch
Search Sources API
197,768 studies31 sourcesUpdated 23 min ago
PreprintCC BY 4.0arXiv

Dipolar boson stars as static two-body systems: an effective-one-body description

  • Thibault Damour
  • Romain Gervalle
  • Tamanna Jain
Open at sourcePDFDOICite

Abstract

Dipolar boson stars consist of two scalar-field lumps held in static equilibrium by the balance between gravitational attraction and scalar repulsion. The repulsion stems from a π phase difference between the harmonically varying complex scalar field sourcing each lump. We construct sequences of these configurations numerically and describe them analytically as bound states of two boson stars within the effective-one-body (EOB) formalism. We map the EOB potential previously derived for the scattering of two boson stars onto an energy-dependent Schwarzschild-like radial potential. We find that the EOB-based analytical prediction for the binding energy of the system agrees remarkably well with the numerical values. The analytical prediction for the critical gravitational coupling beyond which no static equilibrium exists is also consistent with the numerical results.

Related

  1. Static Effective Hamiltonians for Molecular Systems through RPA-Based Downfolding.
    Erik Verzijl, Arno Förster
    Journal of chemical theory and computationPeer-reviewedCC BYFull textAtomic, molecular & optical physicsEurope PMC
  2. Static dipolar impurity in a Fermi gas
    Eugen Dizer, Xin Chen, Richard Schmidt +1
    arXivPreprintarXiv licenceFull textAtomic, molecular & optical physicsCondensed matterarXiv
  3. Continuous-Time Random Walk Description of Anomalous Spin Transport in Dilute Dipolar Networks
    Cooper M. Selco, Christian Bengs, Ashok Ajoy
    arXivPreprintCC BY 4.0Full textCondensed matterQuantum physics & quantum informationarXiv
  4. An effective macroscopic description of early-stage chemical equilibration in high-energy heavy-ion collisions
    Anar Akbarov, Hendrik Roch, Chun Shen
    arXivPreprintCC BY 4.0Full textHigh-energy & particle physicsNuclear physicsarXiv
  5. To USR or not to USR: An effective description of two-field dynamics
    Samuel Sánchez López, Eemeli Tomberg
    HALPreprintarXiv licenceFull textCosmologyGravitation & general relativityHALarXiv

Cite

BibTeXRIS
BibTeX
@misc{damour2026dipolar,
  title = {{Dipolar boson stars as static two-body systems: an effective-one-body description}},
  author = {Thibault Damour and Romain Gervalle and Tamanna Jain},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.06531},
  eprint = {2611.06531},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.06531},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Dipolar boson stars as static two-body systems: an effective-one-body description
AU  - Thibault Damour
AU  - Romain Gervalle
AU  - Tamanna Jain
PY  - 2026
DA  - 2026/11/04
PB  - arXiv
DO  - 10.48550/arxiv.2611.06531
UR  - https://arxiv.org/abs/2611.06531
AB  - Dipolar boson stars consist of two scalar-field lumps held in static equilibrium by the balance between gravitational attraction and scalar repulsion. The repulsion stems from a π phase difference between the harmonically varying complex scalar field sourcing each lump. We construct sequences of these configurations numerically and describe them analytically as bound states of two boson stars within the effective-one-body (EOB) formalism. We map the EOB potential previously derived for the scattering of two boson stars onto an energy-dependent Schwarzschild-like radial potential. We find that the EOB-based analytical prediction for the binding energy of the system agrees remarkably well with the numerical values. The analytical prediction for the critical gravitational coupling beyond which no static equilibrium exists is also consistent with the numerical results.
ER  -