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Timir Datta is an Indian-American physicist specializing in high transition temperature superconductors and a professor of physics in the department of Physics and Astronomy at the University of South Carolina, in Columbia, South Carolina.
Datta grew up in India along with elder brother Jyotirmoy Datta a noted journalist; his father B.N. Dutt a scion of two land owning families from Khulna and Jessore in south central Bengal (British India) was an eminent sugar-refining engineer and on his mother's side a relative of Michael Madhusudan Dutt, the famed poet. He received a master's degree in theoretical plasma physics from Boston College in 1974 under the direction of Gabor Kalman. [pub 1] Datta also worked at the Jet Propulsion laboratory (JPL) in Pasadena, California, as a pre-doctoral NASA research associate of Robert Somoano. He also collaborated with Carl H. Brans at Loyola University New Orleans on a gravitational problem of frame dragging and worked with John Perdew on the behavior of charge density waves in jellium. Datta is of Bengali origin.
Datta was a NSF post-doctoral fellow with Marvin Silver and studied charge propagation in non-crystalline systems [pub 2] at the University of North Carolina in Chapel Hill. At UNC-CH he continued his theoretical interests and worked on retarded Vander Waals potential [pub 3] with L. H. Ford. Since 1982, he has been on the faculty of the University of South Carolina in Columbia.
He collaborated with several laboratories involved with the early discoveries of high temperature superconductivity, especially the team at NRL, led by Donald U Gubser and Stuart Wolf. This research group at USC was the also first to observe [pub 4] (i) bulk Meissner effect in Tl-copper oxides and thus confirm the discovery by Allen Herman's team at the University of Arkansas of high temperature superconductivity in these compounds. [1] He coined the term "triple digit superconductivity", [2] and his group was the first to observe (ii) fractional quantum hall effect in 3-dimensional carbon. [pub 5] [pub 6]
In a paper with Raphael Tsu he derived the first quantum mechanical wave impedance formula for Schrödinger wave functions. [pub 7] He was also the first to show that Bragg's law of X-ray scattering from crystals is a direct consequence of Euclidean length invariance of the incident wave vector; in fact Max von Laue's three diffraction equations are not independent but related by length conservation. [pub 8]
Datta is an active researcher, with over 100 papers listed in the SAO/NASA Astrophysics Data System (ADS) as of 2014. [3]
Datta was issued one US patent in 1995: "Flux-trapped superconducting magnets and method of manufacture", with two co-inventors. [4]
Datta was involved in the university-funded development of a "Gravity Generator" in 1996 and 1997, with then-fellow university researcher Douglas Torr. [5] According to a leaked document from the Office of Technology Transfer at the University of South Carolina and confirmed to Wired reporter Charles Platt in 1998, the device would create a "force beam" in any desired direction and the university planned to patent and license this device. Neither information about this university research project nor any "Gravity Generator" device was ever made public. [6]
Despite the apparent less than successful outcome of the "Gravity Generator" development effort with Torr, Datta became interested in the effects of electric fields on gravitation, expanding on Torr's theoretical work on the subject. [7] [8]
Condensed matter physics is the field of physics that deals with the macroscopic and microscopic physical properties of matter, especially the solid and liquid phases that arise from electromagnetic forces between atoms and electrons. More generally, the subject deals with condensed phases of matter: systems of many constituents with strong interactions among them. More exotic condensed phases include the superconducting phase exhibited by certain materials at extremely low cryogenic temperatures, the ferromagnetic and antiferromagnetic phases of spins on crystal lattices of atoms, the Bose–Einstein condensates found in ultracold atomic systems, and liquid crystals. Condensed matter physicists seek to understand the behavior of these phases by experiments to measure various material properties, and by applying the physical laws of quantum mechanics, electromagnetism, statistical mechanics, and other physics theories to develop mathematical models and predict the properties of extremely large groups of atoms.
Superconductivity is a set of physical properties observed in certain materials where electrical resistance vanishes and magnetic fields are expelled from the material. Any material exhibiting these properties is a superconductor. Unlike an ordinary metallic conductor, whose resistance decreases gradually as its temperature is lowered, even down to near absolute zero, a superconductor has a characteristic critical temperature below which the resistance drops abruptly to zero. An electric current through a loop of superconducting wire can persist indefinitely with no power source.
In quantum mechanics, Schrödinger's cat is a thought experiment, sometimes described as a paradox, of quantum superposition. In the thought experiment, a hypothetical cat may be considered simultaneously both alive and dead, while it is unobserved in a closed box, as a result of its fate being linked to a random subatomic event that may or may not occur. This thought experiment was devised by physicist Erwin Schrödinger in 1935 in a discussion with Albert Einstein to illustrate what Schrödinger saw as the problems of the Copenhagen interpretation of quantum mechanics.
Anti-gravity is a hypothetical phenomenon of creating a place or object that is free from the force of gravity. It does not refer to either the lack of weight under gravity experienced in free fall or orbit, or to balancing the force of gravity with some other force, such as electromagnetism and aerodynamic lift. Anti-gravity is a recurring concept in science fiction. Examples are the gravity blocking substance "Cavorite" in H. G. Wells's The First Men in the Moon and the Spindizzy machines in James Blish's Cities in Flight.
Max Theodor Felix von Laue was a German physicist who received the Nobel Prize in Physics in 1914 for his discovery of the diffraction of X-rays by crystals.
In theoretical physics and applied mathematics, a field equation is a partial differential equation which determines the dynamics of a physical field, specifically the time evolution and spatial distribution of the field. The solutions to the equation are mathematical functions which correspond directly to the field, as functions of time and space. Since the field equation is a partial differential equation, there are families of solutions which represent a variety of physical possibilities. Usually, there is not just a single equation, but a set of coupled equations which must be solved simultaneously. Field equations are not ordinary differential equations since a field depends on space and time, which requires at least two variables.
The Woodstock of physics was the popular name given by physicists to the marathon session of the American Physical Society’s meeting on March 18, 1987, which featured 51 presentations of recent discoveries in the science of high-temperature superconductors. Various presenters anticipated that these new materials would soon result in revolutionary technological applications, but in the three subsequent decades, this proved to be overly optimistic. The name is a reference to the 1969 Woodstock Music and Art Festival.
Superconductivity is the phenomenon of certain materials exhibiting zero electrical resistance and the expulsion of magnetic fields below a characteristic temperature. The history of superconductivity began with Dutch physicist Heike Kamerlingh Onnes's discovery of superconductivity in mercury in 1911. Since then, many other superconducting materials have been discovered and the theory of superconductivity has been developed. These subjects remain active areas of study in the field of condensed matter physics.
The Max Planck Institute for Gravitational Physics is a Max Planck Institute whose research is aimed at investigating Einstein's theory of relativity and beyond: Mathematics, quantum gravity, astrophysical relativity, and gravitational-wave astronomy. The institute was founded in 1995 and is located in the Potsdam Science Park in Golm, Potsdam and in Hannover where it closely collaborates with the Leibniz University Hannover. Both the Potsdam and the Hannover parts of the institute are organized in three research departments and host a number of independent research groups.
Martin Tajmar is a physicist and professor for Space Systems at the Dresden University of Technology. He has research interests in advanced space propulsion systems, FEEP thrusters, breakthrough propulsion physics and possible connections between gravity and superconductivity.
Thallium barium calcium copper oxide, or TBCCO (pronounced "tibco"), is a family of high-temperature superconductors having the generalized chemical formula TlmBa2Can−1CunO2n+m+2.
Raphael Tsu is a Fellow of the American Physical Society and is Professor Emeritus of electrical engineering at the University of North Carolina at Charlotte, Charlotte, NC.
Piers Coleman is a British-born theoretical physicist, working in the field of theoretical condensed matter physics. Coleman is professor of physics at Rutgers University in New Jersey and at Royal Holloway, University of London.
The Racah Institute of Physics is an institute at the Hebrew University of Jerusalem, part of the faculty of Mathematics and Natural Sciences on the Edmund J. Safra Campus in the Givat Ram neighborhood of Jerusalem.
Superfluidity is the characteristic property of a fluid with zero viscosity which therefore flows without any loss of kinetic energy. When stirred, a superfluid forms vortices that continue to rotate indefinitely. Superfluidity occurs in two isotopes of helium when they are liquefied by cooling to cryogenic temperatures. It is also a property of various other exotic states of matter theorized to exist in astrophysics, high-energy physics, and theories of quantum gravity. The theory of superfluidity was developed by Soviet theoretical physicists Lev Landau and Isaak Khalatnikov.
The index of physics articles is split into multiple pages due to its size.
Alexandre Bouzdine (Buzdin) (in Russian - Александр Иванович Буздин; born March 16, 1954) is a French and Russian theoretical physicist in the field of superconductivity and condensed matter physics. He was awarded the Holweck Medal in physics in 2013 and obtained the Gay-Lussac Humboldt Prize in 2019 for his theoretical contributions in the field of coexistence between superconductivity and magnetism.
Frigyes Károlyházy was a Hungarian theoretical physicist, textbook writer and university professor. He was an extremely talented teacher, trying to make complex physical problems understandable to the laity as well.
GrigoryEfimovich Volovik is a Russian theoretical physicist, who specializes in condensed matter physics. He is known for the Volovik effect.
