Holographic Cosmological Constant and Dark Energy
Chao-Jun Feng
TL;DR
This paper proposes a holographic relation linking UV and IR cutoffs to address the cosmological constant problem, suggesting a suppression mechanism that alleviates fine-tuning issues in dark energy models.
Contribution
It introduces a holographic framework connecting UV and IR cutoffs, providing a new perspective on the cosmological constant and dark energy.
Findings
Cosmological constant is highly suppressed with the Hubble scale IR cutoff.
The holographic relation alleviates the fine-tuning problem of dark energy.
Different IR cutoffs are studied in matter and dark energy dominated universes.
Abstract
A general holographic relation between UV and IR cutoff of an effective field theory is proposed. Taking the IR cutoff relevant to the dark energy as the Hubble scale, we find that the cosmological constant is highly suppressed by a numerical factor and the fine tuning problem seems alleviative. We also use different IR cutoffs to study the case in which the universe is composed of matter and dark energy.
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