Charged black string immersed in a quintessence fluid and string cloud
Abstract
We present a new static solution describing a charged black string immersed in a Kiselev-type quintessence fluid and a string cloud. The metric and field equations are solved for a general quintessence state parameter, with explicit results provided for the physically relevant case wq = −2/3. We analyze the event-horizon structure and the Kretschmann scalar, verify energy-condition constraints, and derive thermodynamic properties including the Hawking temperature and heat capacity and the Helmholtz free energy. Finally, we investigate the existence of an exterior photon cylinder for circular null geodesics, finding that, under the parameter assumptions adopted here, no such cylinder occurs outside the outer horizon. The solution generalizes known charged black-string spacetimes by simultaneously including quintessence and a string-cloud parameter.
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BibTeX
@misc{barbosa2026charged,
title = {{Charged black string immersed in a quintessence fluid and string cloud}},
author = {Leonardo G. Barbosa and Franciele M. da Silva},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2606.06435},
eprint = {2606.06435},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.06435},
}
RIS
TY - UNPB
TI - Charged black string immersed in a quintessence fluid and string cloud
AU - Leonardo G. Barbosa
AU - Franciele M. da Silva
PY - 2026
DA - 2026/10/15
PB - arXiv
DO - 10.48550/arxiv.2606.06435
UR - https://arxiv.org/abs/2606.06435
AB - We present a new static solution describing a charged black string immersed in a Kiselev-type quintessence fluid and a string cloud. The metric and field equations are solved for a general quintessence state parameter, with explicit results provided for the physically relevant case w_q = −2/3. We analyze the event-horizon structure and the Kretschmann scalar, verify energy-condition constraints, and derive thermodynamic properties including the Hawking temperature and heat capacity and the Helmholtz free energy. Finally, we investigate the existence of an exterior photon cylinder for circular null geodesics, finding that, under the parameter assumptions adopted here, no such cylinder occurs outside the outer horizon. The solution generalizes known charged black-string spacetimes by simultaneously including quintessence and a string-cloud parameter.
ER -