In cosmology, the cosmological constant problem or vacuum catastrophe is the substantial disagreement between the observed values of vacuum energy density (the small value of the …

oint, which is known as the cosmological constant problem, and show how it is far less trivial than one may think. Its roots dig deep down to the interplay between quantum field

Feb 1, 2021 · Vacuum energy is thought to be the main ingredient in the “cosmological constant,” a mathematical term in the equations of general relativity. The enormous discrepancy between the …

If one can argue that the existence of galaxies, planets, human beings, etc. requires that the vacuum energy not be much larger than presently observed, then one would have an anthropic solution to the …

Thus, in order to get a zero cosmological constant today, we have to put up with an enormous cosmological constant at times before the electroweak phase transition.

Mar 29, 2025 · In this essay, we explore the cosmological constant problem using a specialized adaptation of Einstein’s coefficients—the Einstein Gravitational Coefficients.

Feb 5, 2025 · The cosmological constant problem presents one of the most significant challenges in modern physics. It highlights a fundamental tension between our understanding of gravity and …

In cosmology, the cosmological constant (usually denoted by the Greek capital letter lambda: Λ), alternatively called Einstein's cosmological constant, is a coefficient that Albert Einstein initially …

The essence of the cosmological constant problem is that when an ultraviolet cutoff is introduced to the Planck scale and zero-point energy is calculated, a large cosmological constant proportional to the …

The efforts to understand these problems can be grouped into four general classes. The first approach is to imagine some scalar field coupled to gravity in such a way that V is automatically cancelled or …