Gravity’s Nonlocal Structure Enables Quantum Correlations, Impacting Late-Time Universe Models

Reconciling quantum mechanics with general relativity remains one of the most profound challenges in modern physics, largely because gravity’s description of spacetime fundamentally shapes how quantum phenomena unfold. Johas Morales and Yuri Bonder, from the Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México, investigate a novel approach to this problem by exploring the interplay between quantum correlations and gravity. Their work proposes a new model where the connections defining spacetime are treated as independent entities, potentially resolving inconsistencies between the two theories. This framework not only predicts a natural emergence of a positive cosmological constant, explaining the accelerating expansion of the universe, but also suggests that gravity may exert a unique, velocity-dependent force on particles existing in quantum superposition, opening exciting new avenues for testing the foundations of both quantum mechanics and general relativity.

Reconciling Quantum Mechanics and Gravity

Scientists continue to seek a unified theory that reconciles quantum mechanics with general relativity, two pillars of modern physics. A significant challenge lies in how gravity describes spacetime and its influence on quantum phenomena. Researchers are now investigating the interplay between quantum correlations and gravity, proposing innovative models that treat the connections defining spacetime as independent entities. This approach potentially resolves inconsistencies between the two theories and offers new insights into the fundamental nature of the universe.,.

Non-Locality as a Source of Gravity

A recent theoretical study proposes a novel connection between quantum non-locality and gravity. The central hypothesis suggests that the mechanism underlying quantum entanglement, specifically Bell non-locality, is fundamentally linked to the generation of gravitational effects. This isn’t merely a correlation; the research posits that non-locality is gravity, or at least a crucial ingredient in its origin. This approach addresses several issues in modern physics, including the measurement problem in quantum mechanics and the cosmological constant problem, potentially offering new perspectives on the Hubble tension. The core argument centers on the idea that the correlations established through quantum entanglement contribute to the curvature of spacetime, with the act of measurement playing a key role in this process.,.

Bitensorial Gravity and Cosmological Constant Prediction

Scientists have developed a model that generalizes Einstein’s equations by treating the gravitational connection as an independent bitensorial field. This innovative framework addresses a fundamental inconsistency in combining gravity with quantum mechanics, specifically the non-local features suggested by quantum entanglement. By allowing the connection to operate independently of the metric, the model incorporates nonlocality into the gravitational framework, moving beyond the strict causal structure imposed by traditional general relativity. The model reduces to standard General Relativity when dealing with classical matter, allowing for direct comparison and validation. Applying this model to both the late-time universe and the Newtonian limit, researchers found a natural prediction of a positive effective cosmological constant, aligning with current observations of the universe’s accelerating expansion. Analysis of a Newtonian scenario involving a gravitational source in superposition revealed a novel, nonconservative effective force dependent on the velocity of the test particle, suggesting a pathway for incorporating quantum effects into gravity.,.

Bitensorial Gravity Resolves Quantum Inconsistency and Expansion

Scientists have developed a model that generalizes Einstein’s theory of gravity by treating the gravitational connection as an independent bitensorial field. This approach addresses a fundamental tension between general relativity and quantum mechanics, specifically the nonlocality suggested by violations of Bell inequalities and inherent in the energy-momentum tensor of semiclassical physics. By allowing the connection to operate independently of the metric, the model incorporates nonlocal features into the gravitational framework, moving beyond the strict causal structure imposed by traditional general relativity. The model reduces to standard General Relativity when considering only classical matter, ensuring consistency with established physics in familiar scenarios. In the cosmological context, the research naturally yields a positive effective cosmological constant, offering a potential explanation for the observed accelerated expansion of the universe.,.

Nonlocal Gravity and Independent Connection Fields

Scientists have presented a model that generalizes Einstein’s theory of gravity by treating the gravitational connection as an independent bitensorial field. This approach addresses a fundamental tension between general relativity and quantum mechanics, specifically the nonlocality suggested by violations of Bell inequalities and inherent in the energy-momentum tensor of semiclassical physics. By allowing the connection to operate independently of the metric, the model incorporates nonlocal features into the gravitational framework, moving beyond the strict causal structure imposed by traditional general relativity. The model reduces to standard General Relativity when dealing with classical matter, ensuring consistency with established physics in familiar scenarios. Applying the model to cosmology reveals a natural emergence of a positive cosmological constant, offering a potential avenue for explaining the observed accelerated expansion of the universe. Furthermore, analysis within the Newtonian limit predicts a novel, nonconservative force acting on objects in superposition, suggesting a subtle interplay between quantum states and gravitational interactions.