Einstein’s theory of general relativity elucidates that gravity arises from the curvature of spacetime. This concept is exemplified by Earth’s gravitational pull, which keeps us grounded and explains why objects fall towards the ground.

Figure 1. Quantum Nature of Gravity.

Figure 1 is an illustration of quantum nature of gravity. Conversely, in high-energy physics, scientists delve into the realm of tiny, imperceptible particles governed by the principles of quantum mechanics [1]. Quantum mechanics introduces randomness, leading to uncertainties in particle positions and energies, essential for understanding subatomic behavior.

Efforts to merge these two theories persist in the pursuit of a quantum description of gravity. This endeavor seeks to combine the curvature physics of general relativity with the enigmatic randomness of quantum mechanics.

A recent study in Nature Physics by physicists at The University of Texas at Arlington delves into this intersection. They utilized ultra-high energy neutrinos detected by a particle detector buried deep in the Antarctic glacier [1].

Co-author Benjamin Jones, along with UTA graduate students Akshima Negi and Grant Parker, collaborated with an international team from various countries. They placed thousands of sensors near the South Pole, monitoring neutrinos to probe for quantum signatures in gravity.

Despite analyzing over 300,000 neutrinos [2], the team found no evidence of the anticipated quantum gravitational effects in spacetime fluctuations.

This absence of quantum spacetime geometry underscores the ongoing quest to unveil the mysteries at the interface of quantum mechanics and general relativity [2].

As Jones noted, this analysis concludes UTA’s extensive involvement in the IceCube Observatory. Moving forward, their focus shifts to new experiments aiming to elucidate the origin and properties of neutrino mass using techniques from atomic, molecular, and optical physics.

Source: University of Texas at Arlington

References:

1. https://www.eurekalert.org/news-releases/1043365
2. https://www.spacedaily.com/reports/UTA_scientists_explore_quantum_aspects_of_gravity_using_neutrinos_999.html

Cite this article:

Hana M (2024), UTA Scientists Investigate Quantum Nature of Gravity, AnaTechMaz, pp. 18