Researchers have developed a novel orbital-free density functional theory method offering a computationally efficient way to model the electronic structure of materials at extreme temperatures and densities.
![The study demonstrates how sensitivities to specific GMP parameters-under the hypothesis of [latex]\varepsilon=1[/latex] and [latex]\varphi\_{12}=\varphi\_{13}=0[/latex]-reveal distinct responses when contrasted with sensitivities derived from a prior three-year DeepCore analysis, highlighting an evolution in system behavior over time.](https://arxiv.org/html/2601.22374v1/x3.png)
A new analysis of nearly a decade of IceCube DeepCore data tightens the constraints on non-standard neutrino interactions within the Earth, shedding light on potential solutions to longstanding discrepancies in neutrino oscillation measurements.
![Analysis of the [latex]D^{0}\overline{D}^{0}[/latex] and [latex]D_{0}\overline{H}[/latex] correlator matrix, utilizing hexaquark and dibaryon interpolating operators, demonstrates that an unconstrained fit reveals no bound state, whereas a constrained fit-guided by the model in Eq. (74)-identifies the existence of one.](https://arxiv.org/html/2601.22272v1/x73.png)
New research reveals that imperfections in single-photon detectors can create vulnerabilities in quantum key distribution systems, potentially undermining their security.
![The study demonstrates that diminished scalar amplitude values correlate with reduced Wigner negativity-a reversal of the trend observed in prior analyses-when computations are constrained to the perturbative regime [latex]|\epsilon\_{2}H\chi\_{0}|<1[/latex].](https://arxiv.org/html/2601.22219v1/perturbative.png)
New research suggests quantum effects may have played a larger role in the early universe than previously thought, potentially leaving detectable signatures in the cosmic microwave background.
A new theoretical study explores how classical electromagnetic fields can induce entanglement between photons and gravitons, potentially offering a pathway to observe quantum gravitational effects.
![The study demonstrates the existence of coupled exceptional points within the system, evidenced by the numerical analysis of eigenvalues-with real components shown in blue and imaginary in orange-and further substantiated by the observed [latex]\varepsilon^{-1/8}[/latex] scaling in eigenvector projections onto the (0,0,0,1) mode, where coinciding curves (red) represent the upper eigenvalues and confirm the theoretical predictions.](https://arxiv.org/html/2601.22733v1/x4.png)
New research reveals how the collective behavior of active systems emerges from a surprising link to mathematical physics.
New research reveals that determining the fundamental shape of certain universes described by the holographic principle is fundamentally impossible, akin to solving the classic halting problem.
A new theoretical framework clarifies how to detect faint, long-lasting ripples in spacetime caused by accelerating massive objects, paving the way for observations with future space-based observatories.
New research reveals surprisingly strong quantum correlations between particles created in ultra-peripheral heavy ion collisions, challenging classical expectations.
New research establishes a fundamental constraint on how probability assignments shift when observed through a quantum gate.