Zero-point gravitational field equations

نویسندگان

چکیده

We study the recently reported qmetric (or zero-point-length) expressions of Ricci (bi)scalar $R_{(q)}$ (namely, scalar in a spacetime with limit length $L_0$ built in), focusing specifically on case null separated events. A feature these is that, when considered coincidence $p \to P$, they generically exhibit dependence geodesic along which varying point $p$ approached $P$, sort memory how went to $P$. This fact demands deeper understanding meaning quantity $R_{(q)}$, for this latter tells about curvature as whole at $P$ and would not be supposed depend whichever vector we might happen consider Here, try search framework two apparently conflicting aspects consistently reconciled. find tentative sense could achieved by endowing specific operational meaning. comes, however, price benefit) having no longer arbitrary but, sense, constrained. The constraint turns out form relation between geometry large scale (as compared $L_0$) matter content, namely field equations. comes thanks something happens coincide expression balance (matter spacetime) exchanged heats, i.e. thermodynamic variational principle from equations have been derivable. establishes link (this specific, of) one side (large-scale) other, way reconnecting (once more) quantum feature.

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ژورنال

عنوان ژورنال: Classical and Quantum Gravity

سال: 2021

ISSN: ['1361-6382', '0264-9381']

DOI: https://doi.org/10.1088/1361-6382/ac0310