The Complex Geometry of the Natural World
... viewpoint concerning the role of geometry in basic physics. Broadly speaking, "geometry", after all, means any branch of mathematics in which pictorial representations provide powerful aids to one's mathematical intuition. It is by no means necessary that these "pictures" should refer just to a spat ...
... viewpoint concerning the role of geometry in basic physics. Broadly speaking, "geometry", after all, means any branch of mathematics in which pictorial representations provide powerful aids to one's mathematical intuition. It is by no means necessary that these "pictures" should refer just to a spat ...
AOW- Time Travel
... past is impossible. But Hawking may be wrong. Recent experiments offer some support for time travel's possibility — at least in the world of math. The new study cuts to the core of our understanding of the universe. Proving that time travel is possible would have change classical physics as well as ...
... past is impossible. But Hawking may be wrong. Recent experiments offer some support for time travel's possibility — at least in the world of math. The new study cuts to the core of our understanding of the universe. Proving that time travel is possible would have change classical physics as well as ...
Topological Insulators and Topological Semi-metals
... 5. QAHE in Bi2Se3 and Bi2Te3 doped with Cr or Fe. 6. HgCr2Se4 is a topological Chern semi-metal with a single pair of magnetic monopoles in the bulk, and Fermi arcs on the surface. 7. Possible QAHE in HgCr2Se4 quantum well structure. ...
... 5. QAHE in Bi2Se3 and Bi2Te3 doped with Cr or Fe. 6. HgCr2Se4 is a topological Chern semi-metal with a single pair of magnetic monopoles in the bulk, and Fermi arcs on the surface. 7. Possible QAHE in HgCr2Se4 quantum well structure. ...
Titles and Abstracts
... state as well as the measurement. In this talk, we describe this problem using the term of Fourier transform in group representation. As an example, we treat the case of SU(2) and Weyl-Heisenberg representation. Iman Marvian (Perimeter Institute for Theoretical Physics, Canada) Title: A generalizati ...
... state as well as the measurement. In this talk, we describe this problem using the term of Fourier transform in group representation. As an example, we treat the case of SU(2) and Weyl-Heisenberg representation. Iman Marvian (Perimeter Institute for Theoretical Physics, Canada) Title: A generalizati ...
Black-body Radiation & the Quantum Hypothesis
... in any arbitrary amounts, but only in discrete “quantum” amounts. The energy of a “quantum” depends on frequency as ...
... in any arbitrary amounts, but only in discrete “quantum” amounts. The energy of a “quantum” depends on frequency as ...
Topological Quantum Computation from non-abelian anyons
... This is non-trivial even for abelian anyons. Say we have two identical particles which pick up a phase eiα when exchanged, or equivalently, e2iα under a 2π rotation of one around the other. Then a pair of these picks a phase e8iα when exchanged with different pair. ...
... This is non-trivial even for abelian anyons. Say we have two identical particles which pick up a phase eiα when exchanged, or equivalently, e2iα under a 2π rotation of one around the other. Then a pair of these picks a phase e8iα when exchanged with different pair. ...
Partition Functions in Classical and Quantum Mechanics
... where Γ(E) is a thin shell of thickness ∆ around a surface of constant energy E and d is the dimension of space and N is the total number of particles. We wish to generalize the above correspondence to quantum systems. To do this we have to realize that in quantum systems, the energy level are discr ...
... where Γ(E) is a thin shell of thickness ∆ around a surface of constant energy E and d is the dimension of space and N is the total number of particles. We wish to generalize the above correspondence to quantum systems. To do this we have to realize that in quantum systems, the energy level are discr ...
Quantum structures in general relativistic theories
... As for the existence and the classification of quantum structures, we can state results analogous to the Galilei case. We note that, in the Einstein case, the cohomology class of Ω depends only on the cohomology class of F . Theorem. There exists a quantum structure (Q, Q) if and only if F determine ...
... As for the existence and the classification of quantum structures, we can state results analogous to the Galilei case. We note that, in the Einstein case, the cohomology class of Ω depends only on the cohomology class of F . Theorem. There exists a quantum structure (Q, Q) if and only if F determine ...
Superselection Rules - Philsci
... in 1952 by Wick (1909-1992), Wightman, and Wigner (1902-1995) [13] in connection with the problem of consistently assigning intrinsic parity to elementary particles. They understood an SSR as generally expressing “restrictions on the nature and scope of possible measurements”. The concept of SSR sho ...
... in 1952 by Wick (1909-1992), Wightman, and Wigner (1902-1995) [13] in connection with the problem of consistently assigning intrinsic parity to elementary particles. They understood an SSR as generally expressing “restrictions on the nature and scope of possible measurements”. The concept of SSR sho ...
ПУБЛИКАЦИИ ЛАБОРАТОРИИ ФИЗИКИ ФУНДАМЕНТАЛЬНЫХ
... We construct interactions of nucleons N with higher-spin resonances R invariant under point and gauge transformations of the Rarita-Schwinger field. It is found for arbitrarily high spin of a resonance that the requirement of point- and gauge-invariance uniquely determines a Lagrangian of NR interac ...
... We construct interactions of nucleons N with higher-spin resonances R invariant under point and gauge transformations of the Rarita-Schwinger field. It is found for arbitrarily high spin of a resonance that the requirement of point- and gauge-invariance uniquely determines a Lagrangian of NR interac ...
Goldstone Bosons and Chiral Symmetry Breaking in QCD
... uniquely fixed by the symmetry: L = fπ2 Tr(∂µ Σ† ∂ µ Σ). Expanding to second order in the pion fields gives ordinary kinetic terms; at higher orders we obtain derivative interactions. ...
... uniquely fixed by the symmetry: L = fπ2 Tr(∂µ Σ† ∂ µ Σ). Expanding to second order in the pion fields gives ordinary kinetic terms; at higher orders we obtain derivative interactions. ...
241 Quantum Field Theory in terms of Euclidean Parameters
... Bose-Einstein statistics and half odd integral spin fields should be quantized accordmg to Fermi-Dirac statistics as they are in the ordinary Minkowski variable theory. The charge conjugate field of q(x) is given by ...
... Bose-Einstein statistics and half odd integral spin fields should be quantized accordmg to Fermi-Dirac statistics as they are in the ordinary Minkowski variable theory. The charge conjugate field of q(x) is given by ...
The Quantum Century
... measurement only appears to be determined by the laws of probability because of the presence of hidden variables that influence the measurement, variables that we may one day be able to detect. In the Many Worlds Interpretation, it is assumed that every time a measurement is made on a quantum system ...
... measurement only appears to be determined by the laws of probability because of the presence of hidden variables that influence the measurement, variables that we may one day be able to detect. In the Many Worlds Interpretation, it is assumed that every time a measurement is made on a quantum system ...
What do we know about the world – what is the physics for
... the man has already the abstracting organ, ready for the cognition of the world, ready to support its master in the world, in the “cognitive niche”. It may be of course discussed, in which measure the science is determined by this organ. Based on Piaget, I think that much more than we could believe ...
... the man has already the abstracting organ, ready for the cognition of the world, ready to support its master in the world, in the “cognitive niche”. It may be of course discussed, in which measure the science is determined by this organ. Based on Piaget, I think that much more than we could believe ...
Does Time Exist in Quantum Gravity?
... The modes for the inflaton field and the gravitons evolve into a ‘squeezed quantum state’ during inflation (r > 100) They decohere through coupling to other fields (pointer basis = field basis) Decoherence time is given by td ∼ HI−1 ∼ 10−34 s (C.K., Lohmar, Polarski, Starobinsky 1998, 2007) ...
... The modes for the inflaton field and the gravitons evolve into a ‘squeezed quantum state’ during inflation (r > 100) They decohere through coupling to other fields (pointer basis = field basis) Decoherence time is given by td ∼ HI−1 ∼ 10−34 s (C.K., Lohmar, Polarski, Starobinsky 1998, 2007) ...