• quantum field theory, the theta vacuum is the semi-classical vacuum state of non-abelian Yang–Mills theories specified by the vacuum angle θ that arises when...
    13 KB (2,063 words) - 15:10, 23 June 2023
  • Thumbnail for Vacuum
    Suction – creation of a partial vacuum Theta vacuumvacuum state of semi-classical pure-Yang Mills theories Vactrain Vacuum cementing – natural process...
    67 KB (7,592 words) - 13:29, 6 March 2025
  • Kerr metric (redirect from Kerr vacuum)
    {\frac {d\theta }{d\lambda }}&=\pm {\sqrt {\Theta (\theta )}}\\\Sigma {\frac {d\phi }{d\lambda }}&=-\left(aE-{\frac {L_{z}}{\sin ^{2}\theta }}\right)+{\frac...
    53 KB (6,963 words) - 22:11, 27 February 2025
  • A vacuum Rabi oscillation is a damped oscillation of an initially excited atom coupled to an electromagnetic resonator or cavity in which the atom alternately...
    8 KB (1,691 words) - 21:57, 12 February 2024
  • Thumbnail for Sphaleron
    in physics Instanton – Solitons in Euclidean spacetime Theta vacuum – Yang–Mills theory vacuum state Periodic instantons – Finite energy solutions in...
    13 KB (1,611 words) - 17:16, 27 October 2024
  • the vacuum, is at least m0, ‖ d d t | θ ⟩ ‖ = ‖ H | θ ⟩ ‖ ≥ m 0 ‖ | θ ⟩ ‖ . {\displaystyle \left\|{\frac {d}{dt}}|\theta \rangle \right\|=\|H|\theta \rangle...
    27 KB (3,717 words) - 16:30, 2 February 2025
  • Thumbnail for Snell's law
    angle of incidence ( θ 1 {\displaystyle \theta _{1}} ) and angle of refraction ( θ 2 {\displaystyle \theta _{2}} ) is equal to the refractive index of...
    27 KB (3,950 words) - 11:00, 24 February 2025
  • Thumbnail for Roman Jackiw
    Swarthmore Known for Adler–Bell–Jackiw anomaly Jackiw–Teitelboim gravity Theta vacuum Children Stefan Jackiw Nicholas Jackiw Awards Dirac Medal (1998) Heineman...
    6 KB (488 words) - 09:17, 18 January 2025
  • Thumbnail for Curtis Callan
    CGHS model Callan–Treiman relation Contributions to instanton physics Theta vacuum Scientific career Institutions Princeton University Doctoral advisor...
    5 KB (335 words) - 08:45, 24 January 2025
  • {\displaystyle k(\phi )} -metrics its connection to Chern–Simons models and the theta vacuum structure of quantum gravity https://doi.org/10.1140/epjc/s10052-021-09315-1...
    16 KB (2,560 words) - 21:13, 13 October 2024
  • Thumbnail for Squeezed coherent state
    =\alpha ^{2}\cosh ^{2}(r)+{\alpha ^{*}}^{2}e^{2i\theta }\sinh ^{2}(r)-(1+2{|\alpha |}^{2})e^{i\theta }\cosh(r)\sinh(r)} ⟨ α , ζ | a ^ † a ^ | α , ζ ⟩...
    41 KB (5,809 words) - 16:03, 28 February 2025
  • Thumbnail for Cherenkov radiation
    effects had never been experimentally observed. While the speed of light in vacuum is a universal constant (c = 299,792,458 m/s), the speed in a material may...
    37 KB (4,595 words) - 18:32, 20 February 2025
  • Thumbnail for Fresnel equations
    }=\left|{\frac {Z_{2}\cos \theta _{\mathrm {i} }-Z_{1}\cos \theta _{\mathrm {t} }}{Z_{2}\cos \theta _{\mathrm {i} }+Z_{1}\cos \theta _{\mathrm {t} }}}\right|^{2}...
    68 KB (8,207 words) - 06:56, 23 January 2025
  • − r s r , {\displaystyle 2R^{t}{}_{\theta t\theta }=2R^{r}{}_{\theta r\theta }=-R^{\phi }{}_{\theta \phi \theta }=-{\frac {r_{\text{s}}}{r}},} 2 R t...
    39 KB (5,197 words) - 08:50, 26 February 2025
  • Thumbnail for Frequency
    {\displaystyle y(t)=\sin \theta (t)=\sin(\omega t)=\sin(2\mathrm {\pi } ft)} d θ d t = ω = 2 π f . {\displaystyle {\frac {\mathrm {d} \theta }{\mathrm {d} t}}=\omega...
    21 KB (2,290 words) - 05:16, 12 February 2025
  • r-e^{-i\theta }{\hat {a}}\sinh r} The squeeze operator is ubiquitous in quantum optics and can operate on any state. For example, when acting upon the vacuum...
    5 KB (954 words) - 06:18, 22 August 2024
  • Thumbnail for Wavelength
    Wavelength (redirect from Vacuum wavelength)
    have longer wavelengths. Wavelength depends on the medium (for example, vacuum, air, or water) that a wave travels through. Examples of waves are sound...
    35 KB (4,299 words) - 02:01, 1 March 2025
  • Thumbnail for Wormhole
    {\displaystyle ds^{2}=-c^{2}\,dt^{2}+d\ell ^{2}+(k^{2}+\ell ^{2})(d\theta ^{2}+\sin ^{2}\theta \,d\varphi ^{2}),} first presented by Ellis (see Ellis wormhole)...
    56 KB (6,963 words) - 05:25, 27 February 2025
  • Thumbnail for Higgs mechanism
    z-axis takes the vacuum to   (   0   ,   v   e − 1 2   i   θ   )   . {\displaystyle \ {\Bigl (}\ 0\ ,\ v\ e^{-{\tfrac {1}{2}}\ i\ \theta }\ {\Bigr )}~.}...
    56 KB (6,691 words) - 04:14, 27 February 2025
  • different dynamics than they did in vacuum. Similar to the vacuum case, the mixing angle θ m {\displaystyle \theta _{m}} describes the change of flavors...
    15 KB (1,943 words) - 19:22, 14 February 2025
  • \theta ,\phi ,t)\rightarrow (r,\theta ,-\phi ,t)} and ( r , θ , ϕ , t ) → ( r , − θ , ϕ , t ) {\displaystyle (r,\theta ,\phi ,t)\rightarrow (r,-\theta...
    17 KB (3,711 words) - 13:36, 20 September 2024
  • Thumbnail for Coulomb's law
    _{2}=mg\tan \theta _{2}} and: q 2 4 4 π ε 0 L 2 2 = m g tan ⁡ θ 2 {\displaystyle {\frac {\frac {q^{2}}{4}}{4\pi \varepsilon _{0}L_{2}^{2}}}=mg\tan \theta _{2}}...
    41 KB (6,653 words) - 07:02, 17 January 2025
  • _{\theta }+\cot(\theta )\,\sin(\phi )\,\partial _{\phi }} sin ⁡ ( ϕ ) ∂ θ + cot ⁡ ( θ ) cos ⁡ ( ϕ ) ∂ ϕ {\displaystyle \sin(\phi )\,\partial _{\theta }+\cot(\theta...
    38 KB (6,688 words) - 15:49, 4 November 2024
  • {\displaystyle \theta } = contact angle of intrusion liquid D P {\displaystyle D_{P}} = pore diameter Since the technique is usually performed within a vacuum, the...
    2 KB (338 words) - 13:13, 19 October 2023
  • Thumbnail for Trajectory
    {d} H \over \mathrm {d} \theta }=v^{2}2\cos(\theta )\sin(\theta )/(2g)} which is zero when θ = π / 2 = 90 ∘ {\displaystyle \theta =\pi /2=90^{\circ }} ....
    13 KB (1,995 words) - 22:43, 20 July 2024
  • Thumbnail for Electroweak interaction
    \\Z^{0}\end{pmatrix}}={\begin{pmatrix}\cos \theta _{\text{W}}&\sin \theta _{\text{W}}\\-\sin \theta _{\text{W}}&\cos \theta _{\text{W}}\end{pmatrix}}{\begin{p...
    23 KB (3,601 words) - 06:16, 23 February 2025
  • Thumbnail for Refraction
    the angle of incidence θ 1 {\displaystyle {\theta _{1}}} and angle of refraction θ 2 {\displaystyle {\theta _{2}}} is equal to the ratio of phase velocities...
    20 KB (2,447 words) - 00:08, 25 February 2025
  • dt\otimes dt+{\frac {1}{1-2m/r}}\,dr\otimes dr+r^{2}\,d\theta \otimes d\theta +r^{2}\sin(\theta )^{2}\,d\phi \otimes d\phi } A coframe can be read off...
    27 KB (4,996 words) - 15:30, 8 December 2024
  • \cos {\bigg (}\theta +\xi {\frac {\langle a\rangle }{f_{a}}}{\bigg )}.} To minimize the ground state energy, the axion field picks the vacuum expectation...
    10 KB (1,434 words) - 17:47, 3 October 2023
  • Thumbnail for Hydrogen atom
    {\displaystyle {\frac {\sin \theta }{\Theta }}{\frac {d}{d\theta }}\left(\sin \theta {\frac {d\Theta }{d\theta }}\right)+A\sin ^{2}\theta -B=0} azimuth: 1 Φ d...
    39 KB (6,018 words) - 03:56, 27 December 2024