X-Nico

3 unusual facts about quantum mechanics


Cavity opto-mechanics

The motivation for research on cavity optomechanics comes from fundamental effects of quantum theory and gravity, as well as technological applications.

Manne Siegbahn

Siegbahn's precision measurements drove many developments in quantum theory and atomic physics.

Toffoli gate

Quantum mechanics requires the transformations to be reversible but allows more general states of the computation (superpositions).


Bell Telephone

A hypothetical device named after physicist John Bell which allows signals to be sent faster than the speed of light using quantum mechanics.

Good quantum number

In the case of the hydrogen atom (with the assumption that there is no spin-orbit coupling), the observables that commute with Hamiltonian are the orbital angular momentum, spin angular momentum, the sum of the spin angular momentum and orbital angular momentum, and the z components of the above angular momenta.

If the spin orbit interaction is taken into account, we have to add an extra term in Hamiltonian which represents the magnetic dipole interaction energy.

If such operators commute with the Hamiltonian, then their expectation value remains constant with time.

Ingrid Daubechies

During the next few years, she visited the CNRS Center for Theoretical Physics in Marseille several times, where she collaborated with Alex Grossmann; this work was the basis for her doctorate in quantum mechanics.

Introduction to M-theory

Stephen Hawking and Leonard Mlodinow, in the popular scientific book The Grand Design, take a philosophical position to support a view of the universe as a multiverse, and define it in the book as model-dependent realism which along with a sum-over-histories approach (see Path integral formulation of Quantum mechanics) to the universe as a whole, is used to claim that M-theory is the only candidate for a complete theory of the universe.

Isotropy

; Quantum mechanics or Particle physics: When a spinless particle (or even an unpolarized particle with spin) decays, the resulting decay distribution must be isotropic in the rest frame of the decaying particle regardless of the detailed physics of the decay.

Josef Meixner

He was awarded his doctorate in 1931, with the submission of a thesis on the application of the Green function in quantum mechanics.

Left–right symmetry

The rule is absolutely valid in the classical mechanics of Newton and Einstein, but results from quantum mechanical experiments show a difference in the behavior of left-chiral versus right-chiral subatomic particles.

Lewis Carroll Epstein

Lewis Carroll Epstein is the author of layman's books on physics that use an idiosyncratic mix of cartoons and single-page brain teasers to pull the reader into advanced concepts in classical mechanics, quantum theory, and relativity.

Merlin's Bones

The narrators, all characters in relative ignorance, find themselves caught in a struggle between various powers of Arthurian legend, such as Mordred, Morgan le Fay, the Fisher King, and Merlin himself, which stretches across different centuries and different realities, and seems to have as its focus the bones of Merlin and a laboratory investigating quantum mechanics.

Paolo Cotta-Ramusino

His past research activities have explored: topological Quantum Field Theories in any dimension, BF theories, Cohomology of imbedded loops, Higher dimensional knots; Links, knots and quantum groups; Differential geometrical aspects of string and field theories, Virasoro and Krichever-Novikov algebras; Anomalies in Quantum field theory and their differential geometrical interpretation; and Foundational aspects of Quantum Mechanics.

Rabi frequency

The Rabi frequency is a semiclassical concept as it is based on a quantum atomic transition and a classical light field.

Rabi problem

The classical Rabi problem gives some basic results and a simple to understand picture of the issue, but in order to understand phenomena such as inversion, spontaneous emission, and the Bloch-Siegert shift, a fully quantum mechanical treatment is necessary.

Sesquilinear form

This is the convention used by essentially all physicists and originates in Dirac's bra-ket notation in quantum mechanics.

Waldyr Alves Rodrigues Jr.

Rodrigues is well known for his diverse research interests such as the applications of Clifford algebras, the study of extraordinary solutions of the relativistic wave equations, and the foundations of quantum mechanics and relativity; he has given several lectures on these subjects at international meetings.


see also

Archie Marries Veronica/Archie Marries Betty

Dilton Doiley is going to M.I.T. for his doctorate in quantum mechanics, Reggie Mantle will fulfill his destiny as a used car salesman in Atlanta and Jughead Jones will stick around Riverdale grilling burgers at Pop Tate's Choklit Shoppe until he figures things out.

Copenhagen interpretation

The Copenhagen interpretation is an attempt to explain the mathematical formulations of quantum mechanics and the corresponding experimental results.

Duru–Kleinert transformation

H. Kleinert, Path Integrals in Quantum Mechanics, Statistics, Polymer Physics, and Financial Markets 3.

Edwin C. Kemble

In 1925, Born and Werner Heisenberg, who got his doctorate from Sommerfeld in 1923 and completed his Habilitation under Born in 1924, introduced the matrix mechanics formulation of quantum mechanics.

Electronic Journal of Theoretical Physics

The prize is named for Italian physicist Ettore Majorana (1906–1938), a pioneer in neutrino physics and the quantum mechanics of spin.

Fritz Gesztesy

with Sergio Albeverio, Raphael Høegh-Krohn and Helge Holden: " Solvable Models in Quantum Mechanics", 2nd edition, AMS-Chelsea Series, Amer.

George C. Schatz

He authored over 350 scientific papers, and co-authored two books with his next-door colleague Mark A. Ratner: "Introduction to Quantum Mechanics in Chemistry" and "Quantum Mechanics in Chemistry" (recently reissued as a Dover paperback).

Hamilton's principle

Richard Feynman's path integral formulation of quantum mechanics is based on a stationary-action principle, using path integrals.

Hilbrand J. Groenewold

After a visit to Cambridge to interact with John von Neumann (1934-5) on the links between classical and quantum mechanics, and a checkered career working with Frits Zernike in Groningen, then Leiden, the Hague, De Bilt, and several addresses in the North of Holland during World War II, he earned his Ph.D. degree in 1946, under the tutelage of Léon Rosenfeld at Utrecht University.

Jeffrey Ryan

Ryan was twice nominated for a Juno Award for Classical Composition of the Year (for Quantum Mechanics in 2008 and Pangaea in 2005, the latter recorded by the Thunder Bay Symphony Orchestra conducted by Music Director Geoffrey Moull).

José Enrique Moyal

C. K. Zachos, D. B. Fairlie, and T. L. Curtright, "Quantum Mechanics in Phase Space" (World Scientific, Singapore, 2005) ISBN 981-238-384-0.

Joseph Polchinski

In July 2012, Polchinski, together with two of his students — Ahmed Almheiri and James Sully — and fellow string theorist Donald Marolf at the University of California, Santa Barbara (UCSB), published a paper whose calculations about black hole radiation seemed to suggest that either Relativity Theory's equivalence principle is wrong, or else a key tenet of quantum mechanics is incorrect.

Mark Kac

Mark Kac, Probability and related topics in the physical sciences. 1959 (with contributions by Uhlenbeck on the Boltzmann equation, Hibbs on quantum mechanics, and van der Pol on finite difference analogues of the wave and potential equations, Boulder Seminar 1957).

Moisey

Moisey Markov (1908–1994), Soviet physicist-theorist in quantum mechanics, nuclear physics and particle physics

Overlap

Orbital overlap, important concept in quantum mechanics describing a type of orbital interaction.

Path integral

Path integral formulation of quantum mechanics using functional integration, due to Richard Feynman

Quantum indeterminacy

Indeterminacy in measurement was not an innovation of quantum mechanics, since it had been established early on by experimentalists that errors in measurement may lead to indeterminate outcomes.

Sergio Albeverio

with Fritz Gesztesy, Raphael Høegh-Krohn, Helge Holden: Solvable Models in Quantum Mechanics, Springer 1988, 2nd ed.

Shape resonance

This quantum interference in many body system has been described using quantum mechanics by Gregor Wentzel, for the interpretation of the Auger effect, by Ettore Majorana for the dissociation processes and quasi bound states, by Ugo Fano for the atomic auto-ionization states in the continuum of helium atomic spectrum and by Victor Frederick Weisskopf.

Sonic black hole

The fact that so many systems mimic gravity is sometimes used as evidence for the theory of emergent gravity, which could help reconcile relativity and quantum mechanics.

Transactional interpretation

Cramer uses TIQM in teaching quantum mechanics at the University of Washington in Seattle.