Muhammet Ali Güz

How large does chi-squared get by chance? A measured null distribution for the combination step of Ellis et al.

Ellis et al. [Phys. Rev. D 99, 083009 (2019)] combine the K-reduced distributions of eight Fermi-LAT gamma-ray bursts into a joint bound on the scale of linear Lorentz violation. The combination yields a raw chi-squared of 261, from which they conclude that the sources are not id...

Preregistration: null distributions across a family of time windows — CHRONOS, track A

Preregistration of an examination of the combination step in J. Ellis,R. Konoplich, N. E. Mavromatos, A. S. Nguyen, A. S. Sakharov andE. K. Sarkisyan-Grinbaum, Phys. Rev. D 99, 083009 (2019). Criteria,thresholds, random seeds and controls were fixed before any computation. This v...

Preregistration: null distributions across a family of time windows — CHRONOS, track A

Preregistration of an examination of the combination step in J. Ellis,R. Konoplich, N. E. Mavromatos, A. S. Nguyen, A. S. Sakharov andE. K. Sarkisyan-Grinbaum, Phys. Rev. D 99, 083009 (2019). Criteria,thresholds, random seeds and controls were fixed before any computation. This v...

How large does chi-squared get by chance? A measured null distribution for the combination step of Ellis et al.

Ellis et al. [Phys. Rev. D 99, 083009 (2019)] combine the K-reduced distributions of eight Fermi-LAT gamma-ray bursts into a joint bound on the scale of linear Lorentz violation. The combination yields a raw chi-squared of 261, from which they conclude that the sources are not id...

Preregistration: null distributions across a family of time windows — CHRONOS, track A

Preregistration of an examination of the combination step in J. Ellis,R. Konoplich, N. E. Mavromatos, A. S. Nguyen, A. S. Sakharov andE. K. Sarkisyan-Grinbaum, Phys. Rev. D 99, 083009 (2019). Criteria,thresholds, random seeds, controls and a stopping rule were fixed beforeany com...

Preregistration: null distributions across a family of time windows — CHRONOS, track A

Preregistration of an examination of the combination step in J. Ellis,R. Konoplich, N. E. Mavromatos, A. S. Nguyen, A. S. Sakharov andE. K. Sarkisyan-Grinbaum, Phys. Rev. D 99, 083009 (2019). Criteria,thresholds, random seeds, controls and a stopping rule were fixed beforeany com...

Cancellation of the topological charge in the inverse Faraday effect: why an integrating detector cannot see the winding number

Reliable optical readout is a bottleneck for magnetic textures, and the inverse Faraday effect looks like an obvious route for transferring the orbital angular momentum of light into a magnetisation. I show that in its simplest form this route is closed, and closed exactly rather...

What an optical readout can see of a topological texture: a classification by symmetry with quantified noise limits

Reliable optical readout of magnetic textures is regarded as an open problem; the obstacles named are limited spatial resolution, signal-to-noise ratios degraded by thermal effects, and constraints on high-speed detection. I show that these three obstacles hit different channels...

A tilt statistic for structure-coupled dark energy: a systematics-immune discriminant in fsigma8

Redshift-space distortion measurements constrain the product f*sigma8, whose overall amplitude is degenerate with sigma8 and with any multiplicative calibration of the analysis pipeline. Models in which dark energy couples to structure formation generically predict not a uniform...

Perfect Photon-Number Pairing Bounds Homodyne CHSH Violation

A bound on homodyne Bell violation set by the state class, not by the binning. For over two decades, attempts have been made to violate a CHSH inequality using homodyne detection with sign binning alone, since this measurement is nearly lossless and would permit a loophole-free t...

Areas add, entropies do not: an additivity obstruction to region-wise Barrow-entropic cosmology

I show that the surface degree-of-freedom count used in emergent-gravity and holographic-equipartition cosmology cannot be assigned separately to sub-regions unless Barrow's deformation parameter vanishes, and I quantify the resulting error. Barrow entropy S ∝ A^(1+Δ/2) is non-ad...