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Stephon Alexander
Stephon Alexander is a theoretical physicist, cosmologist, musician, and author who blends the worlds of theoretical physics and jazz music. Personal life and education Alexander was born in Trinidad and moved to the United States when he was eight. He grew up in the Bronx, New York City and attended DeWitt Clinton High School where his physics teacher Daniel Kaplan inspired him to study physics. Alexander is a scientist and a jazz saxophonist who ponders links, including sound, between small and big things in the universe that go beyond Einstein's curved space-time and big bang theory. Einstein's field equation being his favorite equation, his publication ''The Jazz of Physics'' is an autobiographical reflection of his research and theories. Involved with cosmology as a professional physicist, he is also a jazz saxophonist and a student of the works of John Coltrane, among other musicians interested in cosmology. At DeWitt Clinton High School in 10th grade, Alexander's mentor w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Brandenberger
Robert H. Brandenberger (born 1956 in Bern) is a Swiss-Canadian theoretical cosmologist and a professor of physics at McGill University in Montreal, Quebec, Canada. Biography Brandenberger completed his undergraduate degree at ETH Zurich, in Switzerland, and went on to receive his Ph.D. from Harvard University. He was a postdoctoral student under Stephen Hawking at the DAMTP at Cambridge University. He also did postdoctoral work at the Institute for Theoretical Physics, University of California, Santa Barbara. Professor Brandenberger joined the faculty of Brown University in 1987 and then in 2004, he joined McGill University where he is a Canada Research Chair (Tier 1) holder. He is also an affiliate member of the Perimeter Institute for Theoretical Physics. Robert Brandenberger developed the theory of string gas cosmology, with colleague Cumrun Vafa. This theory is an alternative to inflationary cosmology. Honors and awards He has won numerous awards for his work, including t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hořava–Lifshitz Gravity
Hořava–Lifshitz gravity (or Hořava gravity) is a theory of quantum gravity proposed by Petr Hořava in 2009. It solves the problem of different concepts of time in quantum field theory and general relativity by treating the quantum concept as the more fundamental so that space and time are not equivalent (anisotropic) at high energy level. The relativistic concept of time with its Lorentz invariance emerges at large distances. The theory relies on the theory of foliations to produce its causal structure. It is related to topologically massive gravity and the Cotton tensor. It is a possible UV completion of general relativity. Also, the speed of light goes to infinity at high energies. The novelty of this approach, compared to previous approaches to quantum gravity such as Loop quantum gravity, is that it uses concepts from condensed matter physics such as quantum critical phenomena. Hořava's initial formulation was found to have side-effects such as predicting very different r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melvin Gibbs
Melvin Gibbs is an American bass guitarist who has appeared on close to 200 albums in diverse genres of music. Among others, Gibbs is known for working in jazz with drummer Ronald Shannon Jackson and guitarist Sonny Sharrock, and in rock music with Rollins Band and Arto Lindsay. Career A native of Brooklyn, New York, Gibbs attended Medgar Evers College and the Brooklyn Conservatory of Music. After graduating from Berklee College of Music, Gibbs first came to public notice as a member of the group Defunkt, which was a mainstay of the early 1980s downtown New York scene. Throughout most of the 1980s, he played in drummer Ronald Shannon Jackson's Decoding Society with guitarist Vernon Reid and with guitarist Sonny Sharrock and saxophonist John Zorn. With Jackson and guitarist Bill Frisell he was a member of the group Power Tools. Gibbs co-led the band Eye and I with D.K. Dyson who also co-founded the Black Rock Coalition of which he is an original member. Gibbs took on the rol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rioux (musician)
Erin Rioux (pronounced ree-yoo) is an electronic psychedelic record producer, vocalist, and curator based in Brooklyn who makes music under the stage name Rioux. His work merges technology with traditional instrumentation, particularly guitar and bass guitar, to create a rhythmic yet cerebral sonic environment. Career 2011 – 2014 Originally from the Detroit area, Rioux now resides in Brooklyn where he also runs his own event series and record label for electronic music called ''Connect''. In 2011 he released his first full-length LP, ''Everything You Need Is Right Here'' and in the following year he released his critically acclaimed EP ''Come On All You Ghosts'' which featured the single "Find the Reason". 2014 – Now Late in 2012 Rioux began his multimedia event series, ''Connect'', which celebrates artistic innovation across different mediums and in electronic music. Early in 2014 Rioux expanded the event series into a record label focusing on electronic music. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forbes
''Forbes'' () is an American business magazine owned by Integrated Whale Media Investments and the Forbes family. Published eight times a year, it features articles on finance, industry, investing, and marketing topics. ''Forbes'' also reports on related subjects such as technology, communications, science, politics, and law. It is based in Jersey City, New Jersey. Competitors in the national business magazine category include ''Fortune'' and ''Bloomberg Businessweek''. ''Forbes'' has an international edition in Asia as well as editions produced under license in 27 countries and regions worldwide. The magazine is well known for its lists and rankings, including of the richest Americans (the Forbes 400), of the America's Wealthiest Celebrities, of the world's top companies (the Forbes Global 2000), Forbes list of the World's Most Powerful People, and The World's Billionaires. The motto of ''Forbes'' magazine is "Change the World". Its chair and editor-in-chief is Steve Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The New York Times
''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid digital subscribers. It also is a producer of popular podcasts such as '' The Daily''. Founded in 1851 by Henry Jarvis Raymond and George Jones, it was initially published by Raymond, Jones & Company. The ''Times'' has won 132 Pulitzer Prizes, the most of any newspaper, and has long been regarded as a national " newspaper of record". For print it is ranked 18th in the world by circulation and 3rd in the U.S. The paper is owned by the New York Times Company, which is publicly traded. It has been governed by the Sulzberger family since 1896, through a dual-class share structure after its shares became publicly traded. A. G. Sulzberger, the paper's publisher and the company's chairman, is the fifth generation of the family to head the pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Theory Of Relativity
General relativity, also known as the general theory of relativity and Einstein's theory of gravity, is the differential geometry, geometric scientific theory, theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics. General theory of relativity, relativity generalizes special relativity and refines Newton's law of universal gravitation, providing a unified description of gravity as a geometric property of space and time in physics, time or four-dimensional space, four-dimensional spacetime. In particular, the ' is directly related to the energy and momentum of whatever matter and radiation are present. The relation is specified by the Einstein field equations, a system of second order partial differential equations. Newton's law of universal gravitation, which describes classical gravity, can be seen as a prediction of general relativity for the almost flat spacetime geometry around stationary mass distribution ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantum
In physics, a quantum (plural quanta) is the minimum amount of any physical entity (physical property) involved in an interaction. The fundamental notion that a physical property can be "quantized" is referred to as "the hypothesis of quantization". This means that the magnitude of the physical property can take on only discrete values consisting of integer multiples of one quantum. For example, a photon is a single quantum of light (or of any other form of electromagnetic radiation). Similarly, the energy of an electron bound within an atom is quantized and can exist only in certain discrete values. (Atoms and matter in general are stable because electrons can exist only at discrete energy levels within an atom.) Quantization is one of the foundations of the much broader physics of quantum mechanics. Quantization of energy and its influence on how energy and matter interact (quantum electrodynamics) is part of the fundamental framework for understanding and describing nature. E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantum Cosmology
Quantum cosmology is the attempt in theoretical physics to develop a quantum theory of the universe. This approach attempts to answer open questions of classical physical cosmology, particularly those related to the first phases of the universe. Classical cosmology is based on Albert Einstein's general theory of relativity (GTR or simply GR) which describes the evolution of the universe very well, as long as you do not approach the Big Bang. It is the gravitational singularity and the Planck time where relativity theory fails to provide what must be demanded of a final theory of space and time. Therefore, a theory is needed that integrates relativity theory and quantum theory. Such an approach is attempted for instance with loop quantum cosmology, loop quantum gravity, string theory and causal set theory. In quantum cosmology, the universe is treated as a wave function instead of classical spacetime. See also * String cosmology * Brane cosmology * Loop quantum cosmology * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dirac Fermion
In physics, a Dirac fermion is a spin-½ particle (a fermion) which is different from its antiparticle. The vast majority of fermions – perhaps all – fall under this category. Description In particle physics, all fermions in the standard model have distinct antiparticles (''perhaps'' excepting neutrinos) and hence are Dirac fermions. They are named after Paul Dirac, and can be modeled with the Dirac equation. A Dirac fermion is equivalent to two Weyl fermions. The counterpart to a Dirac fermion is a Majorana fermion, a particle that must be its own antiparticle. Dirac quasi-particles In condensed matter physics, low-energy excitations in graphene and topological insulators, among others, are fermionic quasiparticles described by a pseudo-relativistic Dirac equation. See also * Dirac spinor, a wavefunction-like description of a Dirac fermion * Dirac–Kähler fermion, a geometric formulation of Dirac fermions * Majorana fermion, an alternate category of fermion, possibly de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parity (physics)
In physics, a parity transformation (also called parity inversion) is the flip in the sign of ''one'' spatial coordinate. In three dimensions, it can also refer to the simultaneous flip in the sign of all three spatial coordinates (a point reflection): :\mathbf: \beginx\\y\\z\end \mapsto \begin-x\\-y\\-z\end. It can also be thought of as a test for chirality of a physical phenomenon, in that a parity inversion transforms a phenomenon into its mirror image. All fundamental interactions of elementary particles, with the exception of the weak interaction, are symmetric under parity. The weak interaction is chiral and thus provides a means for probing chirality in physics. In interactions that are symmetric under parity, such as electromagnetism in atomic and molecular physics, parity serves as a powerful controlling principle underlying quantum transitions. A matrix representation of P (in any number of dimensions) has determinant equal to −1, and hence is distinct from a rotat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weak Interaction
In nuclear physics and particle physics, the weak interaction, which is also often called the weak force or weak nuclear force, is one of the four known fundamental interactions, with the others being electromagnetism, the strong interaction, and gravitation. It is the mechanism of interaction between subatomic particles that is responsible for the radioactive decay of atoms: The weak interaction participates in nuclear fission and nuclear fusion. The theory describing its behaviour and effects is sometimes called quantum flavourdynamics (QFD); however, the term QFD is rarely used, because the weak force is better understood by Electroweak interaction, electroweak theory (EWT). The effective range of the weak force is limited to subatomic distances and is less than the diameter of a proton. Background The Standard Model of particle physics provides a uniform framework for understanding electromagnetic, weak, and strong interactions. An interaction occurs when two particles ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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