Minimal lengths in 3D via the generalized uncertainty principle

Article Astronomy & Astrophysics

Comments on the cosmological constant in generalized uncertainty models

Michael Bishop et al.

Summary: This study examines the ability of generalized uncertainty principle (GUP) models to address the cosmological constant problem. The research suggests that current GUP models may not be able to adequately solve this problem.

FRONTIERS IN ASTRONOMY AND SPACE SCIENCES (2022)

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Article Astronomy & Astrophysics

Reconciling a quantum gravity minimal length with lack of photon dispersion

Michael Bishop et al.

Summary: Generic arguments suggest a minimal length scale in quantum gravity, with potential observational signal being the dispersion of photons. Proposed modification of position and momentum operators addresses the challenge of minimal distance models while preserving the photon energy-momentum relationship, leading to no dispersion of photons with different energies. This modification can be achieved without altering the commutation relationship.

PHYSICS LETTERS B (2021)

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Article Multidisciplinary Sciences

Testing short distance anisotropy in space

Robert B. Mann et al.

Summary: The isotropy of space is not a logical requirement but an empirical question, and there is suggestive evidence that the universe might be anisotropic. Anisotropies in the universe could be due to quantum gravity corrections, and if these corrections occur between the electroweak scale and the Planck scale, they can have measurable consequences at short distances which can be observed using ultra sensitive condensed matter systems.

SCIENTIFIC REPORTS (2021)

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Article Astronomy & Astrophysics