How is Quintessence Modeled in Theoretical Physics?
Quintessence models are typically described using a scalar field with a potential V(φ). The nature of the potential function V(φ) determines how the quintessence field evolves. Common models include the exponential potential, inverse power-law potential, and pseudo Nambu-Goldstone boson (PNGB) models. These models aim to explain the varying energy density and its impact on cosmic acceleration.
