Test of some fundamental principles in physics via quantum interference with neutrons and photons

Camacho, Abel; Camacho-Galván, Abel

doi:10.1088/0034-4885/70/11/r04

Cited by 11 publications

(6 citation statements)

References 165 publications

(441 reference statements)

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“…The GUP effects have been studied on condensed, atomic matter, black holes at LHC [44][45][46], the Liouville theorem (LT), and the weak equivalence principle (WEP) [47]. Also, the small observed violations of the WEP in experiments of neutron interferometry can be explained using GUP [48][49][50].…”

Section: Generalized Uncertainty Principle (Gup)mentioning

confidence: 99%

Quantum Gravity Effect on The Time History of The Universe

Elmashad

Shalaby

2021

Preprint

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The QCD phase transition exhibits different periods during the evolution time of the universe. We explore the cosmological implications of QCD phase transition in the early universe, which was mainly full of QGP matter, through the Friedmann equations. This is performed by studying the effect of GUP on the MIT bag model. The obtained modified MIT bag model alongside with the Friedmann equations are utilized to study the thermodynamical quantities in terms of the evolution time. The effect of GUP is set by inserting the parameter α = 10 −5 GeV −1 . It is found that, the GUP effect on the evolution time of the universe makes it shorter, i.e the time span of each phase takes shorter time to transfer to another phase than their corresponding ones without GUP effect.

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Section: Generalized Uncertainty Principle (Gup)mentioning

confidence: 99%

Quantum Gravity Effect on The Time History of The Universe

Elmashad

Shalaby

2021

Preprint

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“…( 10.5) and to the masses of hypothetical exchanged particles. Comprehensive reviews on this topic have been given by Adelberger et al (2003), Camacho andCamacho-Galvan (2007), andAntoniadis et al (2011). They urged new investigations with neutrons for the gravitational force at small distances (1-10 μm).…”

Section: Non-newtonian Gravity Effects 313mentioning

confidence: 99%

Neutron Interferometry 2nd Edn

Rauch¹,

Werner²

2015

124

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In this new edition we have retained the overall structure of the original book. It now consists of 12 chapters. We have shifted some material from later chapters to the first chapter. In particular, we have described gravitationally induced quantum interference (COW experiment) and early experiments on spin rotation, spinors, and spin-related phases in Chapter 1. These results have gotten broad attention in recent years and are now described in various standard physics textbooks. This change in format was done with a view of the close connection of these experiments with the atom interferometry field and with the modern ideas on entanglement now permeating all of the modern quantum mechanical literature.Neutron interferometry is a mature technique in experimental physics. The use of the perfect silicon crystal interferometer to accurately measure scattering lengths of many isotopes is given in Chapter 3. Very accurate measurements of the neutron scattering lengths of the proton, deuteron, and He-3 have been carried out in recent years. These results confine the parameters in various theoretical models of few-body nuclear physics.Chapter 4 is retitled "Coherence and Decoherence," so as to include many new topics connected to the current emphasis in certain areas of physics related to how coherent quantum systems decohere and evolve into systems described by classical Lagrangian and Hamiltonian mechanics. The quantum concepts of entanglement, contexuality, squeezing, Wigner functions, interactions of quantum systems with the environment, post selection experiments, measures of distinguishability, intensity-intensity correlations, and Bell's inequalities are the general topics of this expanded chapter. "Contexuality and Kochen-Specker Phenomena" are discussed in a new Chapter 7.Our original Chapter 8 dealing with forthcoming and more speculative experiments is now Chapter 10. Some of those experiments have advanced considerably over the intervening 12 years since the publication of the 1st edition. Experiments related to searches for non-Newtonian gravity at short distances have been pursued in various confined geometries, such as transmission through narrow slits. Related ideas, called "bouncing ball" experiments, have successfully observed quantized states of ultra-cold neutrons in the Earth's gravity. An experiment designed to observe the Anandan acceleration has not yet been attempted. The observation of relativistic proper time effects, as suggested in Chapter 8, occurs at the level of 10 -9 . Suggested observation of such effects in atom beam interferometry, related to a gravitational redshift, has generated interesting, but controversial papers. Perhaps there is a way to pursue such effects with neutron interferometry utilizing the Pendellösung interference fringes, as discussed in this chapter on "Gravitational, Inertial, and Motional Effects." A feasible time-dependent Fizeau experiment is described to study new motional effects and for the cooling of neutron beams.Various new techniques and experiments of...

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“… gives a positive contribution to the pressure. As discussed in [12], the exact bound state on  can be obtained by comparing with observations and experiments [16]. The gamma rays burst would allow us to set an upper value for the GUP-charactering parameter  .…”

Section: Comparison To Lattice Qcd Simulations With Massless Quarksmentioning

confidence: 99%

“…In a series of earlier papers, the effects of GUP was investigated on atomic and condensed matter systems [2,[6][7][8], on the weak equivalence principle (WEP), and on the Liouville theorem (LT) in statistical mechanics [9]. For instance, it has been found that GUP can potentially explain the small observed violations of the WEP in neutron interferometry experiments [10][11][12]. Also, it can predict the existence of a modified invariant phase space which is relevant to the Liouville theorem.It seems that this approach accordingly modifies almost all mechanical Hamiltonians.…”

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confidence: 99%

A Study on Quark-Gluon Plasma Equation of State Using Generalized Uncertainty Principle

Naggar¹,

Abou-Salem²,

Elmashad³

et al. 2013

JMP

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The effects of Generalized Uncertainty Principle, which has been predicted by various theories of quantum gravity replacing the Heisenberg’s uncertainty principle near the Planck scale, on the thermodynamics of ideal Quark-Gluon Plasma (QGP) consisting of two and three flavors are included. There is a clear effect on thermodynamical quantities like the pressure and the energy density which means that a different effect from quantum gravity may be used in enhancement the theoretical results for Quark-Gluon Plasma state of matter. This effect looks like the technique used in lattice QCD simulation. We determine the value of the bag parameter from fitting lattice QCD data and a physical interpretation to the negative bag pressure is introduced.

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Test of some fundamental principles in physics via quantum interference with neutrons and photons

Cited by 11 publications

References 165 publications

Quantum Gravity Effect on The Time History of The Universe

Quantum Gravity Effect on The Time History of The Universe

Neutron Interferometry 2nd Edn

A Study on Quark-Gluon Plasma Equation of State Using Generalized Uncertainty Principle

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