Sure! Here’s the rewritten content:
A novel theory formulated by physicists at Aalto University provides a new perspective on gravity that aligns with established particle physics models, paving the way to understanding the universe’s origins.
The standard model of particle physics delineates the electromagnetic, weak, and strong interactions among three of the four fundamental forces of nature. The challenge in unifying these with gravity has persisted due to the incompatibility of the general theory of relativity and quantum field theory. While quantum field theory employs compact, finite-dimensional symmetry linked to the quantum fields’ internal degrees of freedom, general relativity is grounded in non-competitive, infinite external space-time symmetry. Mikko Partanen & Jukka Tulkki aim to construct a gauge theory of gravity using compact twin symmetry, similar to the formulation of basic interactions in standard models. Image credit: Desy/Science Communication Lab.
“If this research leads to a comprehensive quantum field theory of gravity, it will ultimately address the challenging question of understanding the singularities in black holes and the Big Bang,” stated Dr. Mikko Partanen from Aalto University.
“Theories that effectively unify all fundamental natural forces are often referred to as ‘theory of everything.’
“Several fundamental questions in physics remain unresolved. Current theories do not elucidate why the observable universe exhibits a greater abundance of matter than antimatter.”
The breakthrough lay in formulating gravity through the appropriate gauge theory, which describes how particles interact via fields.
“The most recognized gauge field is the electromagnetic field,” remarked Dr. Jukka Tulkki from Aalto University.
“When charged particles interact, they do so through electromagnetic fields. This represents the proper gauge field.”
“Therefore, if particles possess energy, their interactions will occur through the gravitational field simply because energy exists.”
One of the significant challenges physicists have encountered is discovering a theory of gravity that aligns with the gauge theories governing the three fundamental forces: electromagnetic force, weak nuclear force, and strong nuclear force.
The standard model of particle physics serves as a gauge theory that describes these three forces, characterized by specific symmetries.
“The core concept is to avoid basing your theory on the fundamentally distinct space-time symmetries of general relativity, but rather to establish a gravity gauge theory with symmetry that resembles the standard model’s symmetry,” Dr. Partanen explained.
Without such a theoretical framework, physicists cannot reconcile the two most potent theories at our disposal: quantum field theory and general relativity.
Quantum theory provides insights into the behavior of small particles in a stochastic manner, while general relativity describes the gravitational interactions of massive, familiar objects.
Both theories offer unique perspectives on our universe and have been validated with remarkable accuracy, yet they remain mutually exclusive.
Moreover, due to the weak interactions of gravity, enhanced precision is required to investigate genuine quantum gravity effects beyond the classical theory of general relativity.
“Understanding the quantum theory of gravity is crucial for deciphering phenomena occurring in high-energy gravitational fields,” noted Dr. Partanen.
“These phenomena are particularly relevant in the vicinity of black holes, during the moments following the Big Bang, and in the early universe, areas where existing physical theories fail to apply.”
“I’ve always been captivated by such a grand problem in physics, which inspired me to explore a new symmetry-based approach to gravity theory and begin developing ideas,” he added.
“The resulting work promises to usher in a new era of scientific comprehension, akin to how understanding gravity enabled the creation of GPS technology.”
The theory holds great promise, but the researchers caution that their evidence collection is still ongoing.
This theory employs a technical method known as renormalization, a mathematical technique employed to manage the infinities that arise in calculations.
Currently, Dr. Partanen and Dr. Tulkki have demonstrated its effectiveness to a certain degree for the so-called “first-order” term, but they need to ensure that these infinities can be navigated throughout the calculations.
“If the renormalization process falters under higher-order conditions, the results become endlessly divergent,” Dr. Tulkki explained.
“Hence, demonstrating the continuation of this process is critical.”
“While we still need to gather comprehensive evidence, we are optimistic about our chances for success,” he remarked.
“Challenges remain, but with time and perseverance, I hope they will be surmountable,” Dr. Partanen reflected.
“I cannot predict when, but I expect to gain more insights in the coming years.”
The team’s paper has been published in the journal Report on Progress in Physics.
____
Mikko Partanen & Jukka Tulkki. 2025. Gravity generated by four 1-dimensional single-gauge symmetry and the standard model. Legislator prog. Phys 88, 057802; doi:10.1088/1361-6633/ADC82E
Let me know if you need any additional changes!
Source: www.sci.news
