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.
The fabric of spacetime is roiling with vibrating quantum fields, known as vacuum energy. It's right there, everywhere we look. But could we ever get anything out of it?
Quantum Physics
Aug 23, 2024
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Mathematical solutions to thorny quantum problems can be found more quickly by exploiting the correspondence between the statistical methods used in deep learning and techniques for implementing quantum simulations, a team ...
Quantum Physics
Aug 8, 2024
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Researchers at the International School for Advanced Studies in Trieste, University of Massachusetts, and Instituto de Física Teórica at Universidade Estadual Paulista in Brazil recently introduced an alternative approach ...
While nuclear physicists know the strong interaction is what holds together the particles at the heart of matter, we still have a lot to learn about this fundamental force. Results published earlier this year in Physical ...
General Physics
Jul 16, 2024
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While investigating how string theory can be used to explain certain physical phenomena, scientists at the Indian Institute of Science (IISc) have stumbled upon on a new series representation for the irrational number π. ...
General Physics
Jun 18, 2024
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The experimental generation of increasingly intense light beams could help to unveil new physical regimes occurring in the presence of very strong electromagnetic fields. While some progress has been made towards this goal, ...
A simple concept of decay and fission of "magnetic quivers" helps to clarify complex quantum physics and mathematical structures.
Quantum Physics
Jun 3, 2024
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Nuclear physicists have long been working to reveal how the proton gets its spin. Now, a new method that combines experimental data with state-of-the-art calculations has revealed a more detailed picture of spin contributions ...
General Physics
May 24, 2024
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Perturbative expansion is a valuable mathematical technique which is widely used to break down descriptions of complex quantum systems into simpler, more manageable parts. Perhaps most importantly, it has enabled the development ...
Quantum Physics
May 17, 2024
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Gravity is one of four fundamental interactions. The most precise description of this force is still provided by Einstein's General Theory of Relativity, published in 1915, an entirely classical theory. This description sets ...
General Physics
May 7, 2024
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