Wave Phenomena |
Interference, Interferometry
> s.a. atomic physics; equivalence principle;
interference; molecular physics;
neutrino; neutron.
* Idea: A phenomenon
that allows the study of wave properties of matter and radiation.
* New techniques: 2001,
Multimode waveguide interferometer (MWI) [@ Ovchinnikov & Pfau
PRL(01)
+ pn(01)sep].
@ And quantum mechanics:
Jaekel & Reynaud EPL(90)qp/01 [quantum limits].
@ Two slits: Sudarshan & Rothman AJP(91)jul;
Massar qp/03 [as quantum fingerprinting];
> s.a. interference; Young's Experiment.
@ And gravity: Camacho PLA(99)qp,
PLA(99)qp;
Peters et al Nat(99)aug
+ pn(99)sep;
Speliotopoulos & Chiao gq/04/PRD [response to gravitational waves].
Wave Tails > s.a. huygens principle.
* Idea: Wave tails are developed by
propagating waves in situations in which the Huygens principle is not satisfied.
* In curved spacetime: Tails are due to a cut
in the frequency Green function G(ω) along the Im(ω)
< 0 axis, determined by the asymptotic structure of space (does not depend on horizons);
The late-time behavior is a power law in Schwarzschild spacetime, but not in general.
* Effects: Violation of Huygens' principle;
Ringdown of signal from isolated source; Back-scatter of radiation by curvature.
@ General references: Friedlander 75;
Bombelli & Sonego JPA(94)mp/00;
Noonan CQG(95),
CQG(95);
Nolan gq/96;
Mankin et al PRD(00),
PRD(01)gq/00 [electromagnetism in curved spacetime];
Hod CQG(01)gq/00 [tails in general potentials];
Hod PRD(02)gq [time-dependent].
@ Spherically symmetric objects: Hod CQG(01);
Bizoń & Rostworowski PRD(10);
> s.a. kerr, reissner-nordström,
and schwarzschild spacetimes.
@ Different types of fields: Hod CQG(13)-a1402 [massive spin-2 fields];
Faraoni a1901 [massive scalar, inflaton];
> s.a. gravitational-wave propagation.
@ In cosmology: Ellis & Sciama in(72);
Faraoni & Sonego PLA(92) [scalar waves in FLRW spacetime];
Faraoni & Gunzig IJMPD(99)ap;
Haghighipour GRG(05)gq/04 [electromagnetic waves in FLRW spacetime].
@ Strength of tails: Nolan CQG(97)gq;
Mankin et al PRD(01)gq/00.
> Other spacetimes: see kerr spacetimes.
Other Phenomena
> s.a. diffraction; diffusion;
dispersion; doppler;
polarization; Refraction;
Tractor Beam; wave equations [traveling waves].
@ Reflection / transmission coefficients: Visser PRA(99)qp [1D potential scattering];
Mukhopadhyay mp/99 [instantaneous];
Su et al JPA(08) [exact expressions];
Boonserm PhD(09)-a0907 [rigorous bounds];
Boonserm & Visser JHEP(11)-a1005;
Lee et al TPT(16)oct [total internal reflection, demo];
> s.a. zeno effect.
@ Phase singularities:
Berry & Dennis PRS(01),
PRS(01) [knotted].
@ Beyond geometrical optics: Maj JMP(05)mp/04 [Wigner-Weyl vs complex geometric optics].
@ Other: Kim & Noz FP(05)qp/04-proc [covariant standing waves];
Kowar et al MMAS(11)-a0906 [attenuation, frequency-dependent];
Valero a1406
[topological aspects, singularities and critical points];
Horsley & Bugler-Lamb PRA(16)-a1601 [negative frequencies, microscopic model];
Patsyk et al PRX(18) [accelerating wave packets in curved space].
> Other: see ergodic theory;
Faraday Waves; light; quantum mechanics
[wave-particle duality]; resonances; solitons;
turbulence.
Superluminal Propagation
> s.a. causality violations; electromagnetism;
information; light; photons;
Superluminal Communication; tachyons.
* Experiment: Superluminal group velocities
seen by various labs working on evanescent electromagnetic waves (1993–1994); 2002, Pulses
sent over a significant distance in a 120-m cable made from a coaxial 'photonic crystal'.
* Other possibilities:
Quantum tunneling (e.g., photons); Ultrasound in water with plastic beads; Tachyons.
* Theory: In connection with possible
causality violations, the relevant velocity is the front velocity, which coincides with
the one given by the characteristics of the pde governing wave propagation [for a large
class of equations, @ see refs in Shore NPB(02)gq].
@ General references: Tiwari 03;
Ranfagni et al PLA(07) [interpretation];
Eperon et al a1802 [predictability].
@ Group v > c:
Fox et al PRS(70);
Diener PLA(96) [information transfer],
PLA(97) [energy transport];
üttiker & Thomas SM(98)qp/97;
Aharonov et al PRL(98)qp [in media with inverted populations];
Garrison et al PLA(98)qp [and causality];
Kidambi & Widom PLA(99) [through slabs];
Jackson et al PRA(01)
[and vf < c];
Haché & Poirier APL(02);
Brunner et al PRL(04)qp
+ pw(04)nov [measurement, and signal speed];
Mugnai PLA(07) [and causality];
> s.a. klein-gordon fields.
@ QED effects in curved spacetime:
Konstantinov gq/98;
Shore NPB(02)gq,
CP(03)gq.
@ Other situations: Aharonov et al PRL(98)qp [quantum limitations];
Nowacki qp/02 [??];
Cardone & Mignani PLA(03) [Cologne & Florence experiments];
Mobley in ASA(05);
Ellis et al GRG(07)gq [matter with superluminal speed of sound];
Halvorsen & Leinaas PRA(08)-a0710 [in a birefringent crystal];
Ranfagni et al PLA(08) [microwaves, diffraction effects];
> s.a. klein-gordon fields; modified lorentz symmetry.
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