English

Machian Classical and Semiclassical Emergent Time

General Relativity and Quantum Cosmology 2015-06-16 v2

Abstract

Classical and semiclassical schemes are presented that are timeless at the primary level and recover time from Mach's `time is to be abstracted from change' principle at the emergent secondary level. The semiclassical scheme is a Machian variant of the Semiclassical Approach to the Problem of Time in Quantum Gravity. The classical scheme is Barbour's, cast here explicitly as the classical precursor of the Semiclassical Approach. Thus the two schemes have been married up, as equally-Machian and necessarily distinct, since quantum change is part of whence the latter's timestandard is abstracted.

Keywords

Cite

@article{arxiv.1305.4685,
  title  = {Machian Classical and Semiclassical Emergent Time},
  author = {Edward Anderson},
  journal= {arXiv preprint arXiv:1305.4685},
  year   = {2015}
}

Comments

Replaced with somewhat shorter version Accepted for publication in Class. Quant. Grav

R2 v1 2026-06-22T00:19:31.099Z