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- W4367180355 abstract "The cosmological arrow of time is defined by the initial conditions of the Universe and its subsequent expansion. Wetterich [1] has proposed an alternative picture of the expanding Universe where the observed cosmological redshift can equivalently be viewed as originating from the increase in mass of particles over time. In this article, we address the following problem: How can the cosmological arrow of time be interpreted in a static Universe where the particle masses increase? We take the philosophical point of view that the set of minima in the effective potential of a symmetry-broken quantum field theory represents physically coexisting groundstates. Tunneling of energy, carried by instantons, within the set of groundstates, is suggested to induce the change in particle masses. The directionality in which the instanton energy tends to flow, i.e. from high-energy-density to low-energy-density groundstates, defines then the cosmological arrow of time. It is concluded that the premises on which this article is built, i.e. the assumption that the set of groundstates physically coexists, is invalid if it is found to be impossible to provide a sound argument for the increase in entropy within a contracting spacetime. This is because otherwise the second law of thermodynamics is violated." @default.
- W4367180355 created "2023-04-28" @default.
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- W4367180355 date "2023-04-27" @default.
- W4367180355 modified "2023-10-18" @default.
- W4367180355 title "On the cosmological arrow of time" @default.
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- W4367180355 doi "https://doi.org/10.32388/saudsz.3" @default.
- W4367180355 hasPublicationYear "2023" @default.
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