Stephen A. Fulling

Last updated
Stephen Albert Fulling
Born(1945-04-29)29 April 1945
Nationality U.S.
Alma mater
Known for Fulling–Davies–Unruh effect
Scientific career
Fields Mathematics, Physics
Institutions
Thesis Scalar Quantum Field Theory in a Closed Universe of Constant Curvature  (1972)
Academic advisors Arthur Wightman

Stephen Albert Fulling (born 29 April 1945, Evansville, Indiana) is an American mathematician and mathematical physicist, specializing in the mathematics of quantum theory, general relativity, and the spectral and asymptotic theory of differential operators. [1] He is known for preliminary work that led to the discovery of the hypothetical Unruh effect (also known as the Fulling-Davies-Unruh effect). [2]

Contents

Education and career

After secondary education at Missouri's Lindbergh High School, [3] Fulling graduated in 1967 with A.B. in physics from Harvard University. At Princeton University he became a graduate student in physics and received M.S. in 1969 and Ph.D. in 1972. [4] His thesis Scalar Quantum Field Theory in a Closed Universe of Constant Curvature was supervised by Arthur Wightman. [5] Fulling was a postdoc from 1972 to 1974 at the University of Wisconsin-Milwaukee and from 1974 to 1976 at King's College London. At Texas A&M University he joined the mathematics faculty in 1976 [3] and was promoted to full professor in 1984. In addition to mathematics, he holds a joint appointment in physics and astronomy. [4]

In addition to more than a hundred papers and publications, he has authored two books, Aspects of Quantum Field Theory in Curved Space-Time (Cambridge University Press, 1989) and Linearity and the Mathematics of Several Variables (World Scientific, 2000). [3]

In 2018 Fulling was elected a fellow of the American Physical Society. [3] He has also been elected a foreign member of the Royal Society of Sciences in Uppsala. [6]

Selected publications

Books

  • Fulling, Stephen A. (1989-08-24). Aspects of Quantum Field Theory in Curved Spacetime. Cambridge University Press. ISBN   9780521377683.
  • Fulling, Stephen A.; Sinyakov, Michael N.; Tischchenko, Sergei V. (2000). Linearity and the Mathematics of Several Variables. World Scientific. ISBN   978-981-02-4196-4.

Articles

See also

Related Research Articles

<span class="mw-page-title-main">Casimir effect</span> Force resulting from the quantisation of a field

In quantum field theory, the Casimir effect is a physical force acting on the macroscopic boundaries of a confined space which arises from the quantum fluctuations of a field. It is named after the Dutch physicist Hendrik Casimir, who predicted the effect for electromagnetic systems in 1948.

<span class="mw-page-title-main">Quantum gravity</span> Description of gravity using discrete values

Quantum gravity (QG) is a field of theoretical physics that seeks to describe gravity according to the principles of quantum mechanics. It deals with environments in which neither gravitational nor quantum effects can be ignored, such as in the vicinity of black holes or similar compact astrophysical objects, such as neutron stars as well as in the early stages of the universe moments after the Big Bang.

A wormhole is a hypothetical structure connecting disparate points in spacetime, and is based on a special solution of the Einstein field equations.

<span class="mw-page-title-main">Standard Model</span> Theory of forces and subatomic particles

The Standard Model of particle physics is the theory describing three of the four known fundamental forces in the universe and classifying all known elementary particles. It was developed in stages throughout the latter half of the 20th century, through the work of many scientists worldwide, with the current formulation being finalized in the mid-1970s upon experimental confirmation of the existence of quarks. Since then, proof of the top quark (1995), the tau neutrino (2000), and the Higgs boson (2012) have added further credence to the Standard Model. In addition, the Standard Model has predicted various properties of weak neutral currents and the W and Z bosons with great accuracy.

Hawking radiation is the theoretical thermal black-body radiation released outside a black hole's event horizon. This is counterintuitive because once ordinary electromagnetic radiation is inside the event horizon, it cannot escape. It is named after the physicist Stephen Hawking, who developed a theoretical argument for its existence in 1974. Hawking radiation is predicted to be extremely faint and is many orders of magnitude below the current best telescopes' detecting ability.

<span class="mw-page-title-main">Steven Weinberg</span> American theoretical physicist (1933–2021)

Steven Weinberg was an American theoretical physicist and Nobel laureate in physics for his contributions with Abdus Salam and Sheldon Glashow to the unification of the weak force and electromagnetic interaction between elementary particles.

<span class="mw-page-title-main">Black hole thermodynamics</span> Area of study

In physics, black hole thermodynamics is the area of study that seeks to reconcile the laws of thermodynamics with the existence of black hole event horizons. As the study of the statistical mechanics of black-body radiation led to the development of the theory of quantum mechanics, the effort to understand the statistical mechanics of black holes has had a deep impact upon the understanding of quantum gravity, leading to the formulation of the holographic principle.

Jorge Pullin is an Argentine-American theoretical physicist known for his work on black hole collisions and quantum gravity. He is the Horace Hearne Chair in theoretical Physics at the Louisiana State University.

<span class="mw-page-title-main">Kenneth G. Wilson</span> American theoretical physicist (1936–2013)

Kenneth Geddes "Ken" Wilson was an American theoretical physicist and a pioneer in leveraging computers for studying particle physics. He was awarded the 1982 Nobel Prize in Physics for his work on phase transitions—illuminating the subtle essence of phenomena like melting ice and emerging magnetism. It was embodied in his fundamental work on the renormalization group.

The Immirzi parameter is a numerical coefficient appearing in loop quantum gravity (LQG), a nonperturbative theory of quantum gravity. The Immirzi parameter measures the size of the quantum of area in Planck units. As a result, its value is currently fixed by matching the semiclassical black hole entropy, as calculated by Stephen Hawking, and the counting of microstates in loop quantum gravity.

The Unruh effect is a theoretical prediction in quantum field theory that states that an observer who is uniformly accelerating through empty space will perceive a thermal bath. This means that even in the absence of any external heat sources, an accelerating observer will detect particles and experience a temperature. In contrast, an inertial observer in the same region of spacetime would observe no temperature.

<span class="mw-page-title-main">W. G. Unruh</span> Canadian physicist

William George Unruh is a Canadian physicist at the University of British Columbia, Vancouver who described the hypothetical Unruh effect in 1976.

<span class="mw-page-title-main">Quantum field theory in curved spacetime</span> Extension of quantum field theory to curved spacetime

In theoretical physics, quantum field theory in curved spacetime (QFTCS) is an extension of quantum field theory from Minkowski spacetime to a general curved spacetime. This theory uses a semi-classical approach; it treats spacetime as a fixed, classical background, while giving a quantum-mechanical description of the matter and energy propagating through that spacetime. A general prediction of this theory is that particles can be created by time-dependent gravitational fields (multigraviton pair production), or by time-independent gravitational fields that contain horizons. The most famous example of the latter is the phenomenon of Hawking radiation emitted by black holes.

<span class="mw-page-title-main">History of quantum field theory</span>

In particle physics, the history of quantum field theory starts with its creation by Paul Dirac, when he attempted to quantize the electromagnetic field in the late 1920s. Major advances in the theory were made in the 1940s and 1950s, leading to the introduction of renormalized quantum electrodynamics (QED). The field theory behind QED was so accurate and successful in predictions that efforts were made to apply the same basic concepts for the other forces of nature. Beginning in 1954, the parallel was found by way of gauge theory, leading by the late 1970s, to quantum field models of strong nuclear force and weak nuclear force, united in the modern Standard Model of particle physics.

<span class="mw-page-title-main">Cosmological constant problem</span> Concept in cosmology

In cosmology, the cosmological constant problem or vacuum catastrophe is the substantial disagreement between the observed values of vacuum energy density and the much larger theoretical value of zero-point energy suggested by quantum field theory.

<span class="mw-page-title-main">Light front holography</span> Technique used to determine mass of hadrons

In strong interaction physics, light front holography or light front holographic QCD is an approximate version of the theory of quantum chromodynamics (QCD) which results from mapping the gauge theory of QCD to a higher-dimensional anti-de Sitter space (AdS) inspired by the AdS/CFT correspondence proposed for string theory. This procedure makes it possible to find analytic solutions in situations where strong coupling occurs, improving predictions of the masses of hadrons and their internal structure revealed by high-energy accelerator experiments. The most widely used approach to finding approximate solutions to the QCD equations, lattice QCD, has had many successful applications; however, it is a numerical approach formulated in Euclidean space rather than physical Minkowski space-time.

In theoretical physics, the problem of time is a conceptual conflict between general relativity and quantum mechanics in that quantum mechanics regards the flow of time as universal and absolute, whereas general relativity regards the flow of time as malleable and relative. This problem raises the question of what time really is in a physical sense and whether it is truly a real, distinct phenomenon. It also involves the related question of why time seems to flow in a single direction, despite the fact that no known physical laws at the microscopic level seem to require a single direction.

<span class="mw-page-title-main">Light-front quantization applications</span> Quantization procedure in quantum field theory

The light-front quantization of quantum field theories provides a useful alternative to ordinary equal-time quantization. In particular, it can lead to a relativistic description of bound systems in terms of quantum-mechanical wave functions. The quantization is based on the choice of light-front coordinates, where plays the role of time and the corresponding spatial coordinate is . Here, is the ordinary time, is a Cartesian coordinate, and is the speed of light. The other two Cartesian coordinates, and , are untouched and often called transverse or perpendicular, denoted by symbols of the type . The choice of the frame of reference where the time and -axis are defined can be left unspecified in an exactly soluble relativistic theory, but in practical calculations some choices may be more suitable than others. The basic formalism is discussed elsewhere.

Ramamurti Rajaraman is an emeritus professor of theoretical physics at the School of Physical Sciences at Jawaharlal Nehru University. He was also the co-Chairman of the International Panel on Fissile Materials and a member of the Bulletin of the Atomic Scientists' Science and Security Board. He has taught and conducted research in physics at the Indian Institute of Science, the Institute for Advanced Study at Princeton, and as a visiting professor at Stanford, Harvard, MIT, and elsewhere. He received his doctorate in theoretical physics in 1963 from Cornell University. In addition to his physics publications, Rajaraman has written widely on topics including fissile material production in India and Pakistan and the radiological effects of nuclear weapon accidents.

John Michael Cornwall is an American theoretical physicist who does research on elementary particle physics and quantum field theory as well as geophysics and physics of near-space. He is known for the Pinch Technique.

References

  1. "Stephen Fulling, Texas A&M University". community.wolfram.com.
  2. Fulling, Davies, and Unruh were in communication, and the full significance of the mathematical phenomenon was unclear until Unruh related it to both temperature and particle detectors. In 2019 Fulling and Wilson suggested that what Davies discovered is a separate effect. Fulling, S A; Wilson, J H (2019). "The equivalence principle at work in radiation from unaccelerated atoms and mirrors" (PDF). Physica Scripta. 94 (1): 014004. arXiv: 1805.01013 . Bibcode:2019PhyS...94a4004F. doi:10.1088/1402-4896/aaecaa. ISSN   0031-8949. S2CID   21706009.
  3. 1 2 3 4 "Texas A&M Mathematician Stephen Fulling Elected as American Physical Society Fellow". Texas A&M, Science (science.tamu.edu). 31 October 2018.
  4. 1 2 "Stephen Fulling". Mathematics, Texas A&M University (math.tamu.edu).
  5. Stephen Albert Fulling at the Mathematics Genealogy Project
  6. "Fulling's Curriculum Vitae" (PDF). math.tamu.edu. Retrieved March 5, 2022.