We study the interaction of two massive particles with a quantised gravitational field in its vacuum state using different position observables: (i) frame-dependent coordinate separation and (ii) frame-independent geodesic separation. For free particles, leads to purely unitary dynamics but dissipation. coupled through linear spring, lead cut-off dependences frequency shift harmonic ladder differential motional mode. Our findings highlight subtle consequences observables at interface quantum...

Since the 1970's it has been known that black hole (and other) horizons are truly thermodynamic in nature. More generally, surfaces which not have also conjectured to behave thermodynamically. Initially, for microscopically expanded from a horizon so-called stretched horizons, and more recently, general ordinary emergent gravity program. To test these conjectures we ask whether such satisfy an analogue first law of thermodynamics (as do horizons). For static asymptotically-flat spacetimes...

This paper studied seven libraries in the University of Xi'an (Northwestern China) to determine presence polluting agents such as particle matter less than 10μm (PM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</sub> ), formaldehyde and total volatile organic compounds (TVOC). Data were collected on main structural characteristics buildings; indoor microclimate parameters, temperature relative humidity also monitored. The study showed that...

Abstract Port-based teleportation (PBT) is a variation of regular quantum that operates without final unitary correction. However, its behavior for higher-dimensional systems has been hard to calculate explicitly beyond dimension d = 2. Indeed, relying on conventional Hilbert-space representations entails an exponential overhead with increasing dimension. Some general upper and lower bounds various success measures, such as (entanglement) fidelity, are known, but some become trivial in...

The use of static solution-assisted laser drilling can effectively improve hole roundness, decrease taper angle, and reduce recast layer thickness wall slag adhesion. However, the enormous energy will evaporate solution to form a suspension droplet quality efficiency drilling. To deal with this defect, mist-blowing method was used influence droplets on angle layer. In work, effect wind speed examined, in air, water, NaCl carried out analyse composition morphology. results showed that fan...

Although the sustainability of cultural heritage plays important roles in inheritance humans’ civilization and history, assessments such fields is still limited. In this paper, spatiotemporal analysis method coupling coordination model were applied to assess Shandong Province. Results show that (1) National Key Cultural Relics Protection Units (“cultural units“ hereinafter) Province have obvious convergence city distribution; (2) although tourism response degree each vary greatly, their...

Abstract Random sampling in high dimensions has successfully been applied to phenomena as diverse nuclear resonances, neural networks, and black hole evaporation. Here we revisit an elegant argument by the British physicist Dennis Sciama, who demonstrated that were our Universe random, it would almost certainly have a negligible chance for life. Under plausible assumptions, show random universe can masquerade “intelligently designed,” with fundamental constants instead appearing be fined...

Abstract Quantum vacuum fluctuations of the electromagnetic field result in two signatures on a harmonically trapped charged particle: shift from natural trap frequency and generation quantum coherences. We assess role long-wavelength rotating-wave approximations estimating this shift. estimate magnitude using parameters single-electron cyclotron experiment also demonstrate how dependence magnetic is tied to approximation. expect be observable future experiments. suggest possible route...

We show that the apparent horizon and region near [Formula: see text] of an evaporating charged, rotating black hole are timelike. It then follows holes in nature, which invariably have some rotation, a channel, via classical or quantum information can escape to outside, while shrinks size. discuss implications for loss problem.

Random sampling in high dimensions has successfully been applied to phenomena as diverse nuclear resonances, neural networks and black hole evaporation. Here we revisit an elegant argument by the British physicist Dennis Sciama, which demonstrated that were our universe random, it would almost certainly have a negligible chance for life. Under plausible assumptions, show random can masquerade `intelligently designed,' with fundamental constants instead appearing be fined tuned achieve...

Welding temperature is the main factor that influences welding quality in high frequency induction of composite aluminum alloy thin-walled tubes. The finite element analysis software ANSYS was used to simulate field. One complete penetration tube and boundary conditions convection radiation as well latent heat phase change were taken into account. Then a linear source load calculate distribution draw thermal cycle curves process. Research results filed also provided corresponding basis for...

Noether's theorem identifies fundamental conserved quantities, called Noether charges, from a Hamiltonian. To-date charges remain largely elusive within theories of gravity: We do not know how to directly measure them, and their physical interpretation remains unsettled in general spacetimes. Here we show that the surface gravity as naturally defined for family observers arbitrarily dynamical spacetimes is measurable charge. This charge reduces accepted value on stationary horizons, and,...