According to relativity, the reading of an ideal clock is interpreted as elapsed proper time along its classical trajectory through spacetime. In contrast, quantum theory allows association many simultaneous trajectories with a single clock, each weighted appropriately. Here, we investigate how superposition principle affects gravitational dilation observed by simple – decaying two-level atom. Placing such atom in positions enables us analyze contribution manifest spontaneous emission....

Quantum time dilation occurs when a clock moves in superposition of relativistic momentum wave packets. The lifetime an excited hydrogenlike atom can be used as clock, which we use to demonstrate how quantum manifests spontaneous emission process. resulting rate differs compared with the prepared mixture packets at order v2/c2. This effect is accompanied by correction Doppler shift due coherence between affects spectral line shape v/c. However, its on decay suppressed dilation. We argue that...

Abstract We develop an extension of special relativity in <?CDATA $1+3$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mn>1</mml:mn> <mml:mo>+</mml:mo> <mml:mn>3</mml:mn> </mml:math> dimensional spacetime to account for superluminal inertial observers and show that such rules out the conventional dynamics mechanical point-like particles forces one use a field-theoretic framework. Therefore we field theory can be viewed as direct consequence extended relativity.

Abstract Time dilation is a difference in measured time between two clocks that either move with different velocities or experience gravitational potentials. Both of these effects stem from the theory relativity and are usually associated classically defined trajectories, characterized by position, momentum, acceleration. However, when spatial degrees freedom treated quantum way clock allowed to be coherent superposition momenta heights, additional corrections classical appear, called...

We use the formalism of noisy Gaussian channels to derive explicit transformation laws describing how an arbitrary multimode state a scalar quantum field is perceived by number accelerating observers, each having access at least one modes. Our work, which generalizes earlier results Ahmadi et al. [Phys. Rev. D 93, 124031 (2016)], next step towards better understanding effect gravity on states fields.

According to the general theory of relativity, time can flow at different rates depending on configuration massive objects, affecting temporal order events. Combined with quantum theory, this gravitational effect result in events an indefinite when a object is prepared suitable state. This was argued lead theory-independent test nonclassical through violation Bell-type inequalities for order. Here we show that independence protocol problematic: one auxiliary assumptions above approach turns...

According to relativity, the reading of an ideal clock is interpreted as elapsed proper time along its classical trajectory through spacetime. In contrast, quantum theory allows association many simultaneous trajectories with a single clock, each weighted appropriately. Here, we investigate how superposition principle affects gravitational dilation observed by simple - decaying two-level atom. Placing such atom in positions enables us analyze contribution manifest spontaneous emission....

We propose a new method to measure Casimir-Polder force in an optical cavity by means of atomic excitations. utilize framework which Unruh-DeWitt Hamiltonian mimics the full matter-field interaction and find connection between excitation rate two-level atom energy, allowing map one onto other. argue that such realization opens route study potentials through measurement excited state's population large, spatially compact ensembles atoms.

The performance of quantum information protocols can be impacted by the noninertial motion parties such as in a gravitational field. Previous studies have primarily focused on degradation entanglement for global modes, revealing that bipartite vanishes limit large acceleration, whereas tripartite does not. In this study, we examine impact acceleration Gaussian resource states encoded spatially localized wave packets. Contrarily to prior findings, observe genuine (GTE) various initial and...

Three major misconceptions concerning quantized tachyon fields: the energy spectrum unbounded from below, frame-dependent and unstable vacuum state, non-covariant commutation rules, are shown to be a result of misrepresenting Lorentz group in too small Hilbert space. By doubling this space we establish an explicitly covariant framework that allows for proper quantization fields eliminating all these issues. Our scheme is derived maintain relativistic covariance also singles out two-state...

Abstract We discuss several approaches to determine the Casimir force in inertial frames of reference different dimensions. On an example a simple model involving mirrors Rindler spacetime we show that Casimir’s and Lifschitz’s methods are inequivalent only latter provides correct other geometries. For conformally coupled fields derive flat spacetimes utilizing anomaly provide explicit examples Friedmann–Lemaître–Robertson–Walker ( k = 0) models.

According to the general theory of relativity, time can flow at different rates depending on configuration massive objects, affecting temporal order events. Recent research has shown that, combined with quantum theory, this gravitational effect result in events an indefinite order, which be tested through violation Bell-type inequalities. Einstein, we shall assume physical equivalence a uniform field and corresponding acceleration reference system. Here construct non-gravitational scenario...

We develop an extension of special relativity in $1+3$ dimensional spacetime to account for superluminal inertial observers and show that such rules out the conventional dynamics mechanical point-like particles forces one use a field-theoretic framework. Therefore we field theory can be viewed as direct consequence extended relativity.

Time dilation is a difference in measured time between two clocks that either move with different velocities or experience gravitational potentials. Both of these effects stem from the theory relativity and are usually associated classically defined trajectories, characterized by position, momentum, acceleration. However, when spatial degrees freedom treated quantum way clock allowed to be coherent superposition momenta heights, additional corrections classical appear, called kinematic...

Efficiencies of quantum information protocols can be affected by the noninertial motion involved parties, e.g., in a gravitational field. Most previous studies focused on effects such bipartite entanglement as resource. We show how tripartite Gaussian resource state continuous variables is acceleration observers. Specifically, we analyze genuine degrades due to for various initial states and trajectories parties.