2. Non-relativistic field theories
... In a gravitational field, if a test particle of gravitational mass m experiences a force F, then the gravitational field strength 'g' is defined by "g = F/m", where it is required that the test mass, m, be so small that its presence effectively does not disturb the gravitational field. Newton's law ...
... In a gravitational field, if a test particle of gravitational mass m experiences a force F, then the gravitational field strength 'g' is defined by "g = F/m", where it is required that the test mass, m, be so small that its presence effectively does not disturb the gravitational field. Newton's law ...
Gonzalez-MestresICNFP2016talkPPTX
... as a natural property for standard particles and Bell's theorem does not apply to this new situation. A vacuum made of superluminal preons can also influence black hole dynamics, including new quantum effects and new forms of radiation. LIGO and VIRGO data can potentially be sensitive to such an int ...
... as a natural property for standard particles and Bell's theorem does not apply to this new situation. A vacuum made of superluminal preons can also influence black hole dynamics, including new quantum effects and new forms of radiation. LIGO and VIRGO data can potentially be sensitive to such an int ...
On quantization of gravitational waves
... regime, no realistic setup is remotely feasible. However, our knowledge of classical general relativity is enough to understand that the result of this experiment would be wildly different from the traditional photon one. Bounded objects are characterized by a radius (the Bohr radius for central for ...
... regime, no realistic setup is remotely feasible. However, our knowledge of classical general relativity is enough to understand that the result of this experiment would be wildly different from the traditional photon one. Bounded objects are characterized by a radius (the Bohr radius for central for ...
(1) - Intellectual Archive
... the deep ultraviolet sector, specifically near the Planck scale. As it is well known, General Relativity (GR) is exclusively an “effective” low-energy framework and efforts to develop perturbative quantization of classical gravity result in non-renormalizable theories [20]. So far, the ultraviolet c ...
... the deep ultraviolet sector, specifically near the Planck scale. As it is well known, General Relativity (GR) is exclusively an “effective” low-energy framework and efforts to develop perturbative quantization of classical gravity result in non-renormalizable theories [20]. So far, the ultraviolet c ...
Field and gauge theories
... Path integral breaks down the propagation into infinitesimal elements between complete sets of states Feynman diagrams handy for keeping track of path integrals contributing to a system overall ...
... Path integral breaks down the propagation into infinitesimal elements between complete sets of states Feynman diagrams handy for keeping track of path integrals contributing to a system overall ...
Dispersion Relation of Longitudinal Waves in
... Yarnell et al [5], who determined the dispersion relation of sound waves (the so-called first sound) in superfluid He-4 at 1.1 °K: the dispersion relation shows a non monotonic behavior with a maximum and a minimum - usually explained in terms of Landau’s rotons. Much work has been done on the roton ...
... Yarnell et al [5], who determined the dispersion relation of sound waves (the so-called first sound) in superfluid He-4 at 1.1 °K: the dispersion relation shows a non monotonic behavior with a maximum and a minimum - usually explained in terms of Landau’s rotons. Much work has been done on the roton ...
Doc - Paradigm Shift Now
... Notes on Superforce by Paul Davies, Touchstone books, 1984 Chapter 1: The Unfolding Universe (p. 5-21) Paul Davies: Superforce The advances in theoretical understanding are made spectacular due to the rise of GUTs and supersymmery, which suggest that all nature is ultimately controlled by a “superfo ...
... Notes on Superforce by Paul Davies, Touchstone books, 1984 Chapter 1: The Unfolding Universe (p. 5-21) Paul Davies: Superforce The advances in theoretical understanding are made spectacular due to the rise of GUTs and supersymmery, which suggest that all nature is ultimately controlled by a “superfo ...
Introduction to even-denominator FQHE: composite fermions
... • Theory of the half-filled “Landau level”? • Does the composite fermion picture have any predictive power? • HLR make hypothesis if Fermi liquid state at ν = 1/2 in 1993 ...
... • Theory of the half-filled “Landau level”? • Does the composite fermion picture have any predictive power? • HLR make hypothesis if Fermi liquid state at ν = 1/2 in 1993 ...
Introduction to even-denominator FQHE: composite fermions
... • Theory of the half-filled “Landau level”? • Does the composite fermion picture have any predictive power? • HLR make hypothesis if Fermi liquid state at ν = 1/2 in 1993 ...
... • Theory of the half-filled “Landau level”? • Does the composite fermion picture have any predictive power? • HLR make hypothesis if Fermi liquid state at ν = 1/2 in 1993 ...
l = 0
... For larger atom the assignment of quantum numbers must continue following the rules until the number of electrons corresponding to the particular atom is reached. Writing quantum number for a particular electron can be made easier by translation a spectroscopic notation into a quantum number set. Fo ...
... For larger atom the assignment of quantum numbers must continue following the rules until the number of electrons corresponding to the particular atom is reached. Writing quantum number for a particular electron can be made easier by translation a spectroscopic notation into a quantum number set. Fo ...
Transparencies
... Shouldn’t 2 be right? You don’t need to get the details of atomic dynamics remotely right to understand why the air in the room is uniform, or understand why metals form at low temperature. We then need a general, thermodynamic type argument. Also, phenomenology predictions, low energy symmetry shou ...
... Shouldn’t 2 be right? You don’t need to get the details of atomic dynamics remotely right to understand why the air in the room is uniform, or understand why metals form at low temperature. We then need a general, thermodynamic type argument. Also, phenomenology predictions, low energy symmetry shou ...
Quantum gravity
Quantum gravity (QG) is a field of theoretical physics that seeks to describe the force of gravity according to the principles of quantum mechanics.The current understanding of gravity is based on Albert Einstein's general theory of relativity, which is formulated within the framework of classical physics. On the other hand, the nongravitational forces are described within the framework of quantum mechanics, a radically different formalism for describing physical phenomena based on probability. The necessity of a quantum mechanical description of gravity follows from the fact that one cannot consistently couple a classical system to a quantum one.Although a quantum theory of gravity is needed in order to reconcile general relativity with the principles of quantum mechanics, difficulties arise when one attempts to apply the usual prescriptions of quantum field theory to the force of gravity. From a technical point of view, the problem is that the theory one gets in this way is not renormalizable and therefore cannot be used to make meaningful physical predictions. As a result, theorists have taken up more radical approaches to the problem of quantum gravity, the most popular approaches being string theory and loop quantum gravity. A recent development is the theory of causal fermion systems which gives quantum mechanics, general relativity, and quantum field theory as limiting cases.Strictly speaking, the aim of quantum gravity is only to describe the quantum behavior of the gravitational field and should not be confused with the objective of unifying all fundamental interactions into a single mathematical framework. While any substantial improvement into the present understanding of gravity would aid further work towards unification, study of quantum gravity is a field in it's own right with various branches having different approaches to unification. Although some quantum gravity theories, such as string theory, try to unify gravity with the other fundamental forces, others, such as loop quantum gravity, make no such attempt; instead, they make an effort to quantize the gravitational field while it is kept separate from the other forces. A theory of quantum gravity that is also a grand unification of all known interactions is sometimes referred to as a theory of everything (TOE).One of the difficulties of quantum gravity is that quantum gravitational effects are only expected to become apparent near the Planck scale, a scale far smaller in distance (equivalently, far larger in energy) than what is currently accessible at high energy particle accelerators. As a result, quantum gravity is a mainly theoretical enterprise, although there are speculations about how quantum gravity effects might be observed in existing experiments.