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9 papers · 1 filter
Non-interacting holographic dark energy with Torsion via Hubble Radius
Yongjun Yun, Jungjai Lee
We reconstruct a holographic dark energy model within a Friedmann cosmology incorporating torsion scalar, assuming no interaction between dark energy and dark matter. Setting the H…
Holographic Dark Energy with Torsion
Yongjun Yun, Jungjai Lee
We consider the holographic dark energy model with axial torsion which satisfy the cosmological principle. Subsequently, by using the torsional analogues of Friedmann equations for…
N=2 PNGB Quintessence Dark Energy
Keunsu Cheon, Jungjai Lee
In this paper we show that a pseudo-Nambu-Goldstone boson (PNGB) quintessence of spontaneous symmetry breaking (SSB) is responsible for an epoch of the late time cosmic acceleratio…
Holographic Dark Energy and Quantum Entanglement
Jae-Weon Lee, Hyeong-Chan Kim, Jungjai Lee
In this paper, we briefly review the holographic dark energy model and introduce the idea that dark energy is a kind of thermal energy related to the quantum entanglement of the va…
Causality Problem in a Holographic Dark Energy Model
Hyeong-Chan Kim, Jae-Weon Lee, Jungjai Lee
In the model of holographic dark energy, there is a notorious problem of circular reasoning between the introduction of future event horizon and the accelerating expansion of the u…
Cosmological Imprint of the Second Law of Thermodynamics
Hyeong-Chan Kim, Jae-Weon Lee, Jungjai Lee
We study the evolution of the universe in the presence of inflaton, matter, radiation, and holographic dark energy. The time evolution of the scale factor is obtained by solving th…