Topics, X
X Rays > s.a. X-ray astronomy.
  * Idea: Energetic photons, usually coming
    from electronic transitions to deep-lying atomic levels, with energies in the KeV range.
  * History: Discovered by Röntgen in 1895.
  * Applications: Crystallography by
    X-ray diffraction (Bragg scattering); Medical imaging; Astronomy and astrophysics.
  @ General references:
    issue PT(95)nov;
    Farmelo SA(95)nov [discovery];
    Altarelli et al SA(98)dec [ultrabright sources]; 
    Cesareo RNC(00) [and matter];
    Als-Nielsen & McMorrow 11 [1st ed r PT(02)mar];
    Falcone et al PRS(11) [microscopy];
    Gruner PT(12)dec [imaging detectors].
  @ Phase imaging: Nugent et al PRL(96)
    + pn(06)sep;
    Fitzgerald PT(00)jul.
  @ Applications:
    news bnl(13)jan [X-ray analysis of old paintings];
    news pw(13)jul [zeptosecond (10−21 s) X-ray
      pulses to probe inner electrons and nuclear processes];
    Jones CP(13) [crystallography];
    Gustschin a2001 [X-ray computed tomography].
  @ Related topics: Miao et al Nat(99)jul
    + pn(99)aug [diffraction from non-crystals];
    news at(12)feb [electromagnetically-induced transparency of iron].
  > Online resources:
    see Wikipedia page.
Xenon > see elements.
XX Chain / Model > see quantum phase transitions.
XXX Model
  @ References: Nepomechie IJMPB(99)ht/98-proc [introduction]; Deguchi JPA(01)cm;
   Belliard & Crampé Sigma(13)-a1309 [with general boundaries];
   Magnano & Skrypnyk Sigma(20)-a2006 [and XXZ, separation of variables].
XXZ Chain / Model > see spin models / entanglement entropy.
XY Chain / Model
  > s.a. spin models.
  @ General references:
    Denbigh JPA(78) [partition function];
    Dhahri JPA(08) [+ bath];
    Oliveira-Neto et al JPA(09) [on a 2D random Voronoi-Delaunay lattice];
    Campos & Roncaglia PRA(10) [equivalence between XY chain and dimerized models];
    Batle & Casas PRA(10)-a1007 [non-locality and entanglement];
    Prabhu et al PRA(11) [disorder and multipartite entanglement].
  @ Phase transitions: Messager & Molchanov JSP(06) [non-linear XY model with first and second-order phase transition];
    Farber & Fromm JAMS-a1010 [anti-ferromagnetic, topological approach].
  @ Entropy: Aschbacher LMP(07) [non-equilibrium steady-state entropy];
    Franchini et al JPA(08)-a0707,
    Its & Korepin TMP(10) [Rényi entropy];
    > s.a. entanglement entropy.
  > Related Topics: see
    correlations; quantum phase transitions.
  > Online resources: see
    Wikipedia page.
main page
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