CHE SIGNIFICA LAMB SHIFT IN INGLESE
Spostamento agnello
Nella fisica, lo spostamento dell'agnello, chiamato da Willis Lamb, è una piccola differenza di energia tra due livelli di energia 2S1 / 2 e 2P1 / 2 dell'atomo di idrogeno nell'elettrodinamica quantistica. Secondo l'equazione Dirac, gli orbitali 2S1 / 2 e 2P1 / 2 dovrebbero avere la stessa energia. Tuttavia, l'interazione tra l'elettrone e il vuoto provoca un piccolo spostamento energetico diverso per gli stati 2S1 / 2 e 2P1 / 2. Agnello e Robert Retherford misurarono questo cambiamento nel 1947 e questa misurazione forniva lo stimolo per la teoria della rinormalizzazione per gestire le divergenze. Era il protagonista delle moderne elettrodinamiche quantiche sviluppate da Julian Schwinger, Richard Feynman, Ernst Stueckelberg e Sin-Itiro Tomonaga. Lamb ha vinto il Premio Nobel in Fisica nel 1955 per le sue scoperte legate allo spostamento dell'Agnello.
definizione di Lamb shift nel dizionario inglese
La definizione di Lamb shift nel dizionario è la piccola differenza di energia tra due stati dell'atomo di idrogeno rilevato da Willis Eugene Lamb, il fisico statunitense.
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10 LIBRI IN INGLESE ASSOCIATI CON «LAMB SHIFT»
Scopri l'uso di
Lamb shift nella seguente selezione bibliografica. Libri associati con
Lamb shift e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
Collected Papers of Carl Wieman
Actually they differ by the ground-state Lamb shift plus small, well-measured QED
and fine-structure corrections to the excited-state energies. Thus an accurate
comparison of the two intervals allows one to determine the IS Lamb shift.
2
The Hydrogen Atom: Precision Physics of Simple Atomic Systems
Lamb Shift in Light Hydrogen-Like Atoms Vladimir G. Ivanov1⋆ and Savely G.
Karshenboim2,3⋆⋆ 1 Pulkovo Observatory, St. Petersburg, Russia 2 D. I.
Mendeleev Institute for Metrology, St. Petersburg, Russia 3 Max-Planck-Institut f
̈ur ...
Savely G. Karshenboim,
2001
3
Unification of Classical, Quantum, and Relativistic ...
3.4 Lamb Shift Lamb shift yields in essence an observational evidence of a
polarizable dielectric vacuum. Lamb shift is the energy difference between two
energy levels of the same principle quantum number and the same total angular
...
J. X. Zheng-Johansson, P.-I. Johansson,
2006
4
Theory of Light Hydrogenic Bound States
The linear combination of the 1S,2S and 8D5 Lamb shifts obtained in 2 this
manner admits direct comparison with the Lamb shift theory without any further
complications. However, to make a comparison between the re- sults of different
...
Michael I. Eides, Howard Grotch, Valery A. Shelyuto,
2007
5
Quantum Field Theory II: Quantum Electrodynamics: A Bridge ...
17.5.4 The Lamb Shift On April 26, 1947, Lamb and Retherford experimentally
discovered some fine structure in the spectrum of the hydrogen atom, which is
called the Lamb shift nowadays; they used microwave technique.7 This
spectacular ...
6
Precision Physics of Simple Atomic Systems
From this experiment we deduce for the ground state of H-like uranium a Lamb
Shift value of ... test of QED in the high-Z regime, i.e. aiming at a measurement of
the Is-Lamb-Shift in H-like uranium with an accuracy of 1 eV or even better.
Savely G. Karshenboim, Valery B. Smirnov,
2003
The experimenters' obsession with hydrogen stems from the fact that quantitative
work on its spectrum forms the foundation of empirical determinations of the
Rydberg and fine-structure constants, and the magnitude of the Lamb shift. These
...
8
Topics in Atomic Physics
Because of this nonuniformity of the electric field, the tidal force on this shaking
electron is greatest when the electron is near the nucleus so that s-states (which
have nonzero probability of being found atr = 0) suffer the greatest Lamb shift.
Charles E. Burkhardt, Jacob J. Leventhal,
2006
9
Atomic Physics with Heavy Ions
One major task of bound state QED is to provide accurate predictions of
spectroscopic data, e.g. for the Lamb shift in few-electron systems, which can be
compared with high-precision measurements. Historically, the experimental
observation ...
Heinrich Beyer, Viatcheslav P. Shevelko,
1999
10
Oxford English Dictionary Additions Series
(Lamb shift: formerly a main entry.) [The name of Willis E. Lamb (b. 1913), U.S.
physicist.] Used attrib. to designate phenomena described, predicted, or
demonstrated by Lamb, as Lamb dip, a drop in the output from a laser
spectrometer at a ...
J. A. Simpson, Michael Proffitt, E. S. C. Weiner,
1997
10 NOTIZIE DOVE SI INCLUDE IL TERMINE «LAMB SHIFT»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
Lamb shift nel contesto delle seguenti notizie.
GOP donor Charles Munger Jr. finds wealth buys few friends
"My thesis topic was The Lamb Shift in Heliumlike Uranium," he said by email. Munger settled in Palo Alto, where he and his wife, attorney ... «Los Angeles Times, apr 15»
The Vacuum Catastrophe - Zero-Point Energy
The presence of zero-point fluctuations has been verified experimentally with very accurate measurements of the Lamb Shift, other atomic ... «ZPEnergy, feb 15»
Jovion Corporation - Zero-Point Energy
Casimir-Lamb Shift - Our research indicates that certain electron orbitals in atoms are lower in energy inside a Casimir cavity than outside. «ZPEnergy, lug 14»
Feynman diagrams and the fly in the ointment
It also affects the way in which the spin and orbital angular momentum behave and this can be used to explain the Lamb shift. These tiny effects ... «OUPblog, giu 14»
Neutrons Knock at the Cosmic Door
This approach is completely analogous to the measurement of the Lamb shift of the hydrogen atom, which is a verification of the quantization of ... «Physics, apr 14»
Surprises in physics: From black bodies to the accelerating universe
1947 - Willis Lamb: The Lamb Shift - The Lamb Shift was one of those subtle experimental measurements that lay the foundation for a whole ... «Scientific American, feb 14»
The puzzle of the proton radius
This difference, between the lowest and higher atomic states, is known as the “Lamb Shift,” after William Lamb, the physicist who discovered the ... «World Socialist Web Site, feb 14»
History: Shut up and calculate!
One of the first to hear about the Lamb shift was physicist Julian Schwinger, who before the war had been a rising star in quantum theory. «Nature.com, gen 14»
Proton radius puzzle may be solved by quantum gravity
In these experiments, the proton radius value was measured in terms of an energy difference between two energy levels, called the Lamb shift. «Phys.Org, nov 13»
Physicists Tackle the Shrinking Proton Puzzle
... Nobel Prize in 1955 for his work. Here's the late Hans Bethe talking about the Lamb shift: ... In other words, they're measuring the Lamb shift. «Scientific American, apr 13»