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  • Open Access

Revisiting interpolating flows in (1+1) hydrodynamics

Aritra Banerjee1,* and Abir Ghosh2,†

  • *Contact author: aritra.banerjee@pilani.bits-pilani.ac.in
  • †Contact author: abirghosh.physics@gmail.com
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Phys. Rev. D 112, 045011 – Published 26 August, 2025

DOI: https://doi.org/10.1103/21wp-tl1z

Abstract

We revisit the general analytic solution space for relativistic (1+1)-dimensional hydrodynamics for a perfect fluid flowing along the longitudinal direction. We work out the explicit one-parameter family of interpolating flows between boost-invariant and boost-noninvariant regimes, where a direct and simple dialing of the parameter at the level of solutions is possible. We also discuss the construction of generalized rapidity distribution of entropy for such interpolating flows at the level of potentials.

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Phys. Rev. D 112, 045011– Published 26 August, 2025
  • Received 15 March 2025
  • Accepted 7 August 2025
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