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SUMMARY:Relational Scales and Hamiltonian Renormalization in Quantum Gravi
 ty
DTSTART;VALUE=DATE-TIME:20261024T064000Z
DTEND;VALUE=DATE-TIME:20261024T070000Z
DTSTAMP;VALUE=DATE-TIME:20261025T030458Z
UID:indico-contribution-3008@indico.itp.ac.cn
DESCRIPTION:Speakers: Hongguang Liu (Westlake University)\nHow should one 
 define a renormalization scale when spacetime geometry itself is quantum a
 nd dynamical? I will discuss a relational formulation of coarse graining i
 n which physical resolution and mode ordering are defined by dynamical geo
 metric observables\, while RG flow remains distinct from physical clock ev
 olution.\nI will then present a Hamiltonian implementation using the non-p
 erturbative functional renormalization group\, where quantum fluctuations 
 can modify the full momentum–velocity relation and the symplectic struct
 ure. Requiring consistent local evolution further constrains the effective
  Hamiltonian and provides a route from quantum-gravity dynamics to cosmolo
 gical backgrounds\, perturbations and observables.\n\nhttps://indico.itp.a
 c.cn/event/427/contributions/3008/
LOCATION:
URL:https://indico.itp.ac.cn/event/427/contributions/3008/
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