Quantum field theory (QFT) is a research area in theoretical physics that formulates fundamental interactions in terms of quantized fields defined over spacetime, unifying special relativity and quantum mechanics. It treats particles as excitations of underlying fields and employs operator- or path-integral-based frameworks to compute scattering amplitudes, correlation functions, and vacuum structure. QFT underpins the Standard Model of particle physics, gauge theories, and renormalization methods, and provides the language for describing phenomena such as spontaneous symmetry breaking, anomalies, and topological phases. Research in QFT also interfaces with quantum gravity, conformal field theory, and nonperturbative techniques such as lattice formulations and bootstrap approaches.
An old puzzle in particle physics has been solved: How can quantum field theories be best formulated on a lattice to optimally simulate them on a computer? The answer comes from AI.
General Physics
Jan 26, 2026
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What if your conscious experiences were not just the chatter of neurons, but were connected to the hum of the universe? In a paper published in Frontiers in Human Neuroscience, I present new evidence indicating that conscious ...
SUNY Poly Professor of Physics Dr. Amir Fariborz recently published a paper in Physical Review D titled "Spinless glueballs in generalized linear sigma model." The work takes on a central challenge in modern physics: understanding ...
General Physics
Dec 3, 2025
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49
Most of us first hear about the irrational number π (pi)—rounded off as 3.14, with an infinite number of decimal digits—in school, where we learn about its use in the context of a circle. More recently, scientists have developed ...
General Physics
Dec 3, 2025
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Researchers from Stockholm University and the Indian Institute of Science Education and Research (IISER) Mohali have reported a practical way to spot one of physics' strangest predictions: the Unruh effect, which says that ...
General Physics
Nov 10, 2025
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138
The geometry of space, where physical laws unfold, may also hold answers to some of the deepest questions in fundamental physics. The very structure of spacetime might underlie every interaction in nature.
General Physics
Nov 10, 2025
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A clever mathematical tool known as virtual particles unlocks the strange and mysterious inner workings of subatomic particles. What happens to these particles within atoms would stay unexplained without this tool. The calculations ...
General Physics
Oct 6, 2025
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Researchers at Hiroshima University have developed a realistic, highly sensitive method to detect the Unruh effect—a long-predicted phenomenon at the crossroads of relativity and quantum theory. Their novel approach opens ...
General Physics
Sep 11, 2025
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In 1951, physicist Julian Schwinger theorized that by applying a uniform electrical field to a vacuum, electron-positron pairs would be spontaneously created out of nothing, through a phenomenon called quantum tunneling.
Condensed Matter
Sep 1, 2025
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283
Skyrmions are localized, particle-like excitations in materials that retain their structure due to topological constraints (i.e., restrictions arising from properties that remain unchanged under smooth deformations). These ...
