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Semiclassical cosmology with polymer matter

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arxiv 1705.00398 v1 pith:OUW7G2KB submitted 2017-05-01 gr-qc hep-th

Syed Moeez Hassan , Viqar Husain This is my paper · ORCID
classification gr-qchep-th
keywords polymerquantizationgravitymattercosmologyscalarclassicalcosmological
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In loop quantum cosmology, polymer quantization is applied to gravity and Schrodinger quantization to matter. This approach misses interesting cosmological dynamics coming from the polymer quantization of matter. We demonstrate this in semiclassical cosmology with a scalar field and pressureless dust: gravity is kept classical, dust is used to fix the time gauge, and polymer quantization effects are isolated in the scalar field. The resulting dynamics shows a period of inflation, both with and without a scalar potential, and the emergence of a classical universe at late times. Since gravity is not quantized, the cosmological singularity is not resolved, but our results suggest that polymer quantization of both gravity and matter are important for a complete picture.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. An effective Friedmann equation for a bouncing anisotropic universe

    gr-qc 2026-07 conditional novelty 6.0 of 10

    Derives the effective Friedmann equation and the exact parabolic shear–density relation at the bounce for polymer Bianchi-I, with constants −4, 4, 0 in the sharply peaked limit.

  2. Polymer Bianchi-I with polymer matter

    gr-qc 2025-09 conditional novelty 5.0 of 10

    In a Bianchi-I universe with polymer quantization of both geometry and a massless scalar, the matter polymer scale shifts the quantum bounce and alters volume and anisotropy evolution.

  3. Polymer cosmology with polymer matter: Effective dynamics

    gr-qc 2025-02 conditional novelty 5.0 of 10

    A polymer-quantized scalar field on a polymer-quantized FLRW background produces a bounce whose location depends on the matter polymer scale, with generic asymmetric evolution across the bounce.

  4. Einstein@Home all-sky "bucket" search for continuous gravitational waves in LIGO O3 public data

    gr-qc 2025-08 unverdicted novelty 4.0 of 10

    A non-detection and upper limit for continuous gravitational waves is claimed, but the body text is an unrelated cosmology paper, making the result unverifiable.

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