Casimir effect ≈ Casimir effect
View article
Spin Entanglement Witness for Quantum Gravity Open
Understanding gravity in the framework of quantum mechanics is one of the great challenges in modern physics. However, the lack of empirical evidence has lead to a debate on whether gravity is a quantum entity. Despite varied proposed prob…
View article
Electromagnetic Nonreciprocity Open
We aim at providing a global perspective on electromagnetic nonreciprocity and clarifying confusions that arose in recent developments of the field. We provide a general definition of nonreciprocity and classify nonreciprocal systems accor…
View article
Materials perspective on Casimir and van der Waals interactions Open
Interactions induced by electromagnetic fluctuations, such as van der Waals and Casimir forces, are of universal nature present at any length scale between any types of systems. In such interactions these are important not only for the fun…
View article
Optically Levitated Nanodumbbell Torsion Balance and GHz Nanomechanical Rotor Open
Levitated optomechanics has great potential in precision measurements, thermodynamics, macroscopic quantum mechanics, and quantum sensing. Here we synthesize and optically levitate silica nanodumbbells in high vacuum. With a linearly polar…
View article
Cavity Casimir-Polder Forces and Their Effects in Ground-State Chemical Reactivity Open
Here, we present a fundamental study on how the ground-state chemical reactivity of a single molecule can be modified in a QED scenario, i.e., when it is placed inside a nanoscale cavity and there is strong coupling between the cavity fiel…
View article
Fifty Years of the Dynamical Casimir Effect Open
This is a digest of the main achievements in the wide area, called the Dynamical Casimir Effect nowadays, for the past 50 years, with the emphasis on results obtained after 2010.
View article
Attonewton force detection using microspheres in a dual-beam optical trap in high vacuum Open
We describe the implementation of laser-cooled silica microspheres as force\nsensors in a dual-beam optical dipole trap in high vacuum. Using this system we\nhave demonstrated trap lifetimes exceeding several days, attonewton force\ndetect…
View article
An algebraic approach to the analytic bootstrap Open
We develop an algebraic approach to the analytic bootstrap in CFTs. By acting with the Casimir operator on the crossing equation we map the problem of doing large spin sums to any desired order to the problem of solving a set of recursion …
View article
Casimir wormholes Open
Casimir energy is always indicated as a potential source to generate a traversable wormhole. It is also used to prove the existence of negative energy which can be built in the laboratory. However, in the scientific literature there is no …
View article
Dislocation strain as the mechanism of phonon scattering at grain boundaries Open
Thermal conductivities of polycrystalline thermoelectric materials are satisfactorily calculated by replacing the commonly used Casimir model (freqeuncy-independent) with grain boundary dislocation strain model (frequency-dependent) of Kle…
View article
Isoelectronic determination of the thermal Casimir force Open
Differential force measurements between spheres coated with either nickel or gold and rotating disks with periodic distributions of nickel and gold are reported. The rotating samples are covered by a thin layer of titanium and a layer of g…
View article
Bidirectional Soliton Rain Dynamics Induced by Casimir-Like Interactions in a Graphene Mode-Locked Fiber Laser Open
We study experimentally and theoretically the interactions among ultrashort optical pulses in the soliton rain multiple-pulse dynamics of a fiber laser. The laser is mode locked by a graphene saturable absorber fabricated using the mechani…
View article
Traversable wormholes in four dimensions Open
We present a wormhole solution in four dimensions. It is a solution of an Einstein Maxwell theory plus charged massless fermions. The fermions give rise to a negative Casimir-like energy, which makes the wormhole possible. It is a long wor…
View article
Quantum gravity witness via entanglement of masses: Casimir screening Open
A recently proposed experimental protocol for quantum gravity induced entanglement of masses (QGEM) requires in principle realizable, but still very ambitious, set of parameters in matter-wave interferometry. Motivated by easing the experi…
View article
Structure and structure-preserving algorithms for plasma physics Open
Hamiltonian and action principle (HAP) formulations of plasma physics are reviewed for the purpose of explaining structure preserving numerical algorithms. Geometric structures associated with and emergent from HAP formulations are discuss…
View article
Generalized spin mapping for quantum-classical dynamics Open
We recently derived a spin-mapping approach for treating the nonadiabatic dynamics of a two-level system in a classical environment [J. E. Runeson and J. O. Richardson, J. Chem. Phys. 151, 044119 (2019)] based on the well-known quantum equ…
View article
Stable Casimir equilibria and quantum trapping Open
Something repulsive in the Casimir effect Two uncharged objects (metal plates for instance) will experience an attractive force between them, the magnitude of which increases as they are brought closer together. This force, or Casimir effe…
View article
Recent progress in engineering the Casimir effect – applications to nanophotonics, nanomechanics, and chemistry Open
Quantum optics combines classical electrodynamics with quantum mechanics to describe how light interacts with material on the nanoscale, and many of the tricks and techniques used in nanophotonics can be extended to this quantum realm. Spe…
View article
Noninvertible 1-form symmetry and Casimir scaling in 2D Yang-Mills theory Open
Pure Yang-Mills theory in two spacetime dimensions shows exact Casimir scaling. Thus, there are infinitely many string tensions, and this has been understood as a result of nonpropagating gluons in two dimensions. From ordinary symmetry co…
View article
Noise-mediated Casimir-like pulse interaction mechanism in lasers Open
Strongly pumped mode-locked lasers often form pulse bunches. Although several mechanisms of pulse interaction are known, none yields the experimentally observed long-range attraction. Here we demonstrate theoretically and experimentally a …
View article
Fluctuating volume-current formulation of electromagnetic fluctuations in inhomogeneous media: Incandescence and luminescence in arbitrary geometries Open
We describe a fluctuating volume--current formulation of electromagnetic fluctuations that extends our recent work on heat exchange and Casimir interactions between arbitrarily shaped homogeneous bodies [Phys. Rev. B. 88, 054305] to situat…
View article
Crossing symmetry in alpha space Open
A bstract We initiate the study of the conformal bootstrap using Sturm-Liouville theory, specializing to four-point functions in one-dimensional CFTs. We do so by decomposing conformal correlators using a basis of eigenfunctions of the Cas…
View article
Lateral Casimir Force on a Rotating Particle near a Planar Surface Open
We study the lateral Casimir force experienced by a particle that rotates near a planar surface. The origin of this force lies in the symmetry breaking induced by the particle rotation in the vacuum and thermal fluctuations of its dipole m…
View article
Information Transmission Without Energy Exchange Open
We show that it is possible to use a massless field in the vacuum to communicate in such a way that the signal travels arbitrarily slower than the speed of light and such that no energy is transmitted from the sender to the receiver. Inste…
View article
Emission of photon pairs by mechanical stimulation of the squeezed vacuum Open
To observe the dynamical Casimir effect (DCE) induced by a moving mirror is a\nlong-standing challenge because the mirror velocity needs to approach the speed\nof light. Here, we present an experimentally feasible method for observing this…
View article
Quantum control and long-range quantum correlations in dynamical Casimir arrays Open
The recent observation of the dynamical Casimir effect in a modulated superconductingwaveguide, culminating thirty years ofworldwide research, empowered the quantum technology community with a tool to create entangled photons on chip. In t…
View article
Rotating fermions inside a cylindrical boundary Open
We study a quantum fermion field inside a cylinder in Minkowski space-time. On the surface of the cylinder, the fermion field satisfies either spectral or MIT bag boundary conditions. We define rigidly-rotating quantum states in both cases…
View article
Matter Dependence of the Four-Loop Cusp Anomalous Dimension Open
We compute analytically the matter-dependent contributions to the quartic Casimir term of the four-loop lightlike cusp anomalous dimension in QCD, with n_{f} fermion and n_{s} scalar flavors. The result is extracted from the double pole of…
View article
Collective behavior of colloids due to critical Casimir interactions Open
If colloidal solute particles are suspended in a solvent close to its\ncritical point, they act as cavities in a fluctuating medium and thereby\nrestrict and modify the fluctuation spectrum in a way which depends on their\nrelative configu…
View article
Chiral Casimir forces: Repulsive, enhanced, tunable Open
Both theoretical interest and practical significance attach to the sign and strength of Casimir forces. A famous, discouraging no-go theorem states that “the Casimir force between two bodies with reflection symmetry is always attractive.” …