|  Types of Approaches to Quantum Gravity | 
Group Field Theory > s.a. deformed special relativity;
  renormalization; tensor networks.
  @ General references: Oriti JPCS(06)gq/05,
    in(09)gq/06;
    Freidel IJTP(05)ht;
    Ryan gq/06 [new proposal];
    Oriti JPCS(07)ht/06,
    a0709-proc,
    a0710-proc;
    Oriti CQG(10)-a0902 [and simplicial quantum gravity],
    JPCS(09)-a0903;
    Oriti & Tlas CQG(10)-a0912 [simplicial quantum geometry];
    Oriti a0912-proc [rev];
    Oriti & Sindoni NJP(11)-a1010-in [hydrodynamics, and classical geometrodynamics];
    Vitale PoS-a1103
      [relationship with discretized BF models];
    Livine et al CQG(11)-a1104 [and the canonical Hamiltonian constraint];
    Oriti a1110-ch [introduction];
    Baratin & Oriti JPCS(12)-a1112 [non-technical];
    Vitale AIP(12)-a1203 [rev];
    Carrozza PRD(15)-a1411 [in dimension 4 – ε];
    Kotecha & Oriti NJP(18)-a1801 [Gibbs states];
    Wilson-Ewing PRD(19)-a1810 [relational Hamiltonian];
    Oriti a1811 [I];
    Carrozza et al Univ(20)-a2001 [overview].
  @ And lqg / lqc: Oriti & Tlas CQG(08)-a0710 [unifying framework for lqg and simplicial quantum gravity];
    Oriti CQG(16)-a1310
      & CQG+ [as the 2nd quantization of lqg];
    Oriti a1408-in [lqg];
    Oriti et al NJP(15)-a1409 [for the whole loop quantum gravity state space].
  @ Quantum cosmology: Gielen et al PRL(13)-a1303;
    Calcagni PRD(14)-a1407 [lqc];
    Gielen & Sindoni Sigma(16)-a1602;
    Gielen CQG(16)-a1604 [from GFT condensate];
    de Cesare et al PRD(16)-a1606 [cyclic universe and accelerated expansion];
    Oriti a1612-CRP [intro];
    de Cesare et al CQG(18)-a1709,
    Gielen & Oriti PRD(18)-a1709 [cosmological perturbations];
    Baytaş et al Univ(19)-a1811 [and lqc];
    Pithis & Sakellariadou Univ(19)-a1904 [rev].
  @ With matter: Li et al CQG(17)-a1703 [scalar field];
    Gielen a1808 [in a matter reference frame].
  @ Related topics: Pithis & Thürigen a1808 [phase transitions, Landau perspective].
Other Approaches
  > s.a. emergent gravity; physical theories;
  non-commutative gravity; spacetime topology;
  stochastic quantum mechanics; quaternions.
  @ Conformal factor:
    Padmanabhan PRD(83),
    PRD(83);
    Bleecker CQG(87);
    Floreanini & Percacci NPB(95) [effective potential];
    Antoniadis et al PRD(97)ht/95,
    PRD(97)ht/95;
    in Burdet & Perrin gq/97;
    Shojai et al MPLA(98)gq/99;
    Shojai IJMPA(00)gq [??];
    't Hooft a1009 [integrating over the conformal factor first];
    Hamada PRD(12).
  @ Geodesic distance, metric uncertainty:
    Diósi & Lukács PLA(89);
    Álvarez et al PLB(92) [geodesic distance as variable],
    PRD(92) [quantum metric space];
    Maggiore PLB(93)ht;
    Chiang et al PRD(16)-a1512 [spacetime interval operator];
    Padmanabhan MPLA(20)-a1911;
    > s.a. world function.
  @ Covariant Hamiltonian: Kanatchikov gq/98-proc,
    gq/99,
    IJTP(01)gq/00 [de Donder-Weyl];
    Aleksandrov TMP(04) [covariant lqg].
  @ Theory of embeddings: Pavšič CQG(85)-a1403,
    FP(96)gq/95,
    G&C(96)gq/95;
    Hájíček & Kiefer NPB(01)ht/00 [spherical shell];
    Park ATMP(18)-a1406 [hypersurface foliation].
  @ And spinor fields: Lisi gq/02;
    Galehouse in(04)mp/02;
    Kober PRD(09)-a0812;
    Hughes & Randono a1105 [is geometry bosonic or fermionic?];
    Vladimirov & Diakonov PRD(12)-a1208 [phase transitions in spinor quantum gravity on a lattice];
    > s.a. canonical quantum gravity; spin networks.
  @ Local: Noldus a1101;
    Larsson a1407
      [diffeomorphism symmetry, unitarity, and locality postulated];
    Palmer a1709.
  @ Quasilocal: Conrady et al PRD(04)gq/03 [vacuum].
  @ Based on fluctuations: Zakir ht/98,
    ht/99;
    Hu IJTP(02)gq [kinetic theory of fluctuations];
    Hall GRG(05) [from "exact uncertainty"];
    Succi IJMPC(12)-a1111 [Kolmogorov scaling theory, turbulence, and fractal spacetime];
    > s.a. quantum spacetime; stochastic quantization.
  @ Newtonian: Hansson PE(10)gq/06;
    Bramson PRS(07) [axisymmetric, spinning systems].
  @ Algebraic methods: Crane JMP(95)gq;
    Tanasa CQG(10)-a0909;
    Martins IJMPA(13)-a1003 [overview];
    Etesi ATMP(16)-a1402 [and orientation-preserving diffeomorphism group];
    Giddings JHEP(15)-a1503 [Hilbert space structure, non-locality and entanglement];
    Araya-Gochez a1601 ["quantum ring theory"];
    Rejzner IJMPD(16)-a1603-MG14 [perturbative];
    Freidel et al a2007 [corner symmetry algebra].
  @ Renormalizable theory proposals:
    Krasnov ht/06 [non-metric];
    Wiesendanger JModP(14)-a1308 [gauge theory of volume-preserving diffeomorphisms],
    CQG(19)-a1806 [gauge theory of the Lorentz group].
  @ And gauge theory: Ragiadakos a1204-GRF [Lorentzian complex structure of spacetime];
    Hanada a1407-conf
      [gauge-gravity duality and super Yang-Mills theory];
    > s.a. covariant quantum gravity;
      types of gauge theory [higher gauge theory].
  @ Precanonical quantization: Kanatchikov NPPS(00)gq,
    IJTP(01)gq/00,
    AIP(13)-a1212,
    NPCS-a1407,
    a1512-MG14;
    > s.a. approaches to canonical qg.
  @ Related topics: Banks NPB(85);
    Gotay CQG(86);
    Casher PLB(87);
    Kleinert PLB(87);
    Kocharovsky & Kocharovsky FP(87);
    Balbinot et al PRD(90) [and adiabatic phase];
    Myers CQG(92) [unbounded action];
    Greensite PRD(94)gq/93 [transfer matrix formalism];
    Galehouse qp/94;
    Modanese NPB(95) [potential energy];
    Prugovečki in(96)gq/95 [quantum frame bundles];
    Federbush ht/99;
    Dzhunushaliev & Singleton Ent(02)gq/01 [and complexity];
    Nishikawa ht/02-conf [minimal assumptions];
    Minic & Tze PLB(04)ht/03,
    ht/04-proc;
    Moffat gq/04 [in momentum space];
    Jejjala et al IJMPD(04)gq [??];
    Iftime DGDS-gq/07;
    Nassif a0709 [at large length scales];
    Finkelstein IJTP(08) [homotopy];
    Glinka G&C(10)-a0808;
    Darabi a0809 [phenomenological];
    Yang MPLA(10)-a1007;
    Yang a1111-proc ["background-independent"];
    Takook & Rouhani a1208 [Krein space quantization];
    Palmer a1210 ["gravitational theory of the quantum"];
    news ns(13)may [Weinstein's theory of everything];
    Salvio & Strumia JHEP(14)-a1403,
    EPJC(18)-a1705 [without scales, "agravity"];
    Sutherland a1502
      ["naive", using final boundary conditions];
    Mandrin a1505 [non-dynamical approach, NDA];
    Walstad a1507 [from special relativity and quantum theory];
    Horndeski a1508 [with gravitons as holes in space];
    Arbuzov et al PAN(17)-a1511 [Von Neumann's procedure];
    > s.a. decomposition; Dirac Sea;
      duality [gauge-gravity, surface-state]; holography
      in gravitation; renormalization and asymptotic safety;
      Third Quantization.
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