The University of Southampton

Physics and Astronomy has around 5,000 publications listed in the University of Southampton EPrints repository, many with the full text available to read online.

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Recent Physics and Astronomy Publications

Temperature dependence of the static quark diffusion coefficient - Debasish Banerjee, Saumen Datta, Rajiv V. Gavai and Pushan Majumdar
Type: Article | 2023
Prominent quantum many-body scars in a truncated Schwinger model - Jean-Yves Desaules, Ana Hudomal, Debasish Banerjee, Arnab Sen, Zlatko Papić and Jad C. Halimeh
Type: Article | 2023
Weak ergodicity breaking in the Schwinger model - Jean-Yves Desaules, Debasish Banerjee, Ana Hudomal, Zlatko Papić, Arnab Sen and Jad C. Halimeh
Type: Article | 2023
A new type of lattice gauge theory through self-adjoint extensions - Alessandro Mariani, Debasish Banerjee, Aditya Banerjee, Gurtej Kanwar, Tobias Rindlisbacher and Uwe-Jens Wiese
Type: Conference or Workshop Item | 2023 | Proceedings of Science
Crystalline phases at finite winding densities in a quantum link ladder - Paolo Stornati, Philipp Krah, Karl Jansen and Debasish Banerjee
Type: Article | 2023
Dynamical quantum phase transitions in spin-S U(1) quantum link models - Maarten Van Damme, Torsten V. Zache, Debasish Banerjee, Philipp Hauke and Jad C. Halimeh
Type: Article | 2022
Toward the continuum limit of a 1 + 1D quantum link Schwinger model - Torsten V. Zache, Maarten Van Damme, Jad C. Halimeh, Philipp Hauke and Debasish Banerjee
Type: Article | 2022
Exploring bosonic and fermionic link models on (3 + 1)D tubes - Debasish Banerjee, Emilie Huffman and Lukas Rammelmüller
Type: Article | 2022
Introducing fermionic link models - Debasish Banerjee, Emilie Huffman and Lukas Rammelmueller
Type: Conference or Workshop Item | 2022 | Proceedings of Science
Phases at finite winding number of an Abelian lattice gauge theory - Paolo Stornati, Debasish Banerjee, Karl Jansen and Philipp Krah
Type: Conference or Workshop Item | 2022 | Proceedings of Science
Three-dimensional Gross-Neveu model with two flavors of staggered fermions - Sandip Maiti, Debasish Banerjee, Shailesh Chandrasekharan and Marina Krstic Marinkovic
Type: Conference or Workshop Item | 2022 | Proceedings of Science
Ground-state phase diagram of quantum link electrodynamics in (2 + 1)-d - Tomohiro Hashizume, Jad C. Halimeh, Philipp Hauke and Debasish Banerjee
Type: Article | 2022
Type: Article | 2022
Subleading conformal dimensions at the O(4) Wilson-Fisher fixed point - Debasish Banerjee and Shailesh Chandrasekharan
Type: Article | 2022
Type: Article | 2022 | Item not available on this server.
Extraction of bare form factors for Bs→Kℓν decays in nonperturbative HQET - Felix Bahr, Debasish Banerjee, Fabio Bernardoni, Mateusz Koren, Hubert Simma and Rainer Sommer
Type: Article | 2019 | Item not available on this server.
Achieving the quantum field theory limit in far-from-equilibrium quantum link models - Jad C. Halimeh, Maarten Van Damme, Torsten V. Zache, Debasish Banerjee and Philipp Hauke
Type: Article | 2022 | Item not available on this server.
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Published: 30 April 2020
Illustration
Dr Marcus Newton will investigate multifunctional ferroic materials in the Future Leaders Fellowship

Dr Marcus Newton will use novel X-ray imaging to expand the understanding of multifunctional ferroic materials in a new Future Leaders Fellowship at the University of Southampton.

The Lecturer in Physics and Astronomy will work with the Diamond Light Source synchrotron facility in Oxfordshire to investigate the materials that simultaneously exhibit more than one property, such as electricity, elasticity or magnetism.

Scientists predict that multiferroics could help realise computer memory chips that are more energy efficient by two orders or magnitude and mobile phone batteries that retain charge for a year. This new Southampton materials research could also prove revolutionary for astronomy.

"Certain materials have structural defects that share the same symmetry as that of the early universe," Marcus explains. "The image in 3D could tell us about the structure of the early universe – it could help cosmologists understand how the universe was made."

The £1.1m programme, called Time Resolved Imaging of Multifunctional Materials in Three Dimensions (TRIMM-3D), is the fourth Future Leaders Fellowship from UKRI to be awarded to the University of Southampton.

Read the full story on the main news page.

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Published: 28 April 2020
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Aurora over river Kitinen, Finland

Southampton space physicists are appealing for thousands of members of the public to help them discover more about the phenomenon of the Northern Lights Aurora Borealis.

Aurora are formed when charged particles from space collide with gas particles in the Earth's atmosphere producing a beautiful natural display with a rich variety of shapes and movements on many different scales.

Scientists in Physics and Astronomy at the University of Southampton are keen to understand more about this natural phenomenon and have developed a citizen science project Aurora Zoo that invites the public to find and classify the Aurora Borealis.

Participants will be able to help the research team classify thousands of images of the Northern Lights to make discoveries of new types of aurora and explore the processes of the upper atmosphere. The pictures have been taken by the Auroral Structure and Kinetics (ASK) camera system located on Svalbard in the high Arctic, halfway between Norway and the North Pole. The research team returned there earlier this year to further their observations into the Northern Lights and to calibrate and upgrade the instrumentation. They documented their expedition in a daily blog.

Project leader Dr Daniel Whiter said: "There's still so much we don't understand about small-scale structure in the aurora. With the help of the public, we can identify the aurora and build a database of the different structures and movements present at different times. Using other sensory data recorded during those times, it will be possible for the team to get a better understanding of the mechanisms behind the creation of these structures.

"Strong electric fields and currents in the upper atmosphere are associated with the aurora, and these heat the atmosphere much like a current heats a resistor. As the atmosphere is heated, chemical reaction rates vary, and so the composition and dynamics of the atmosphere change in ways which need to be included in atmospheric, meteorological and climate models.

"We're also investigating the interaction between the Sun's and Earth's magnetic fields, which will help us learn how space weather might affect spacecraft and space technology, and studying waves and processes in plasma, which has applications in areas such as fusion reactors and spacecraft propulsion systems."

Aurora Zoo contributors, need no prior knowledge of physics and astronomy and a tutorial and field guide are available to help them classify auroral features. Images are processed several times and compared when they are compiled for researchers.

To find out more or to become involved in classifying the Northern Lights images click here.

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Published: 22 April 2020
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Research being carried out in the Solid-State Quantum Optics Group

A Southampton Physics and Astronomy associate professor has received a prestigious Gordon and Betty Moore Foundation grant to explore the role of quantum effects in the energy transfer that occurs after light is absorbed by photosynthetic bio-molecules.

Dr Luca Sapienza, an Associate Professor of Physics, has been awarded nearly $2m from the Foundation that was set up in the USA to create positive outcomes for future generations by fostering path-breaking scientific discovery, environmental conservation, patient care improvements and the preservation of the special character of the San Francisco Bay Area.

Luca, who leads the University's Solid-State Quantum Optics Group, will use the funding to work on research towards Revealing unambiguous signatures of quantum coherence in photosynthetic complexes on a photonic chip with Dr Alexandra Olaya-Castro, a Professor of Physics at University College London.

Together they will study how quantum phenomena could be involved in the way photosynthetic molecules transfer the energy they absorb from light. As well as the fundamental interest, they are hoping that by reverse-engineering natural processes optimised by nature during billions of years, they will be able to improve the performance of energy harvesting devices.

Luca said: "This energy transfer process within photosynthetic bio-molecules is much more efficient than the one achieved in current manmade photovoltaic devices, but the origin of this feature is still under debate.

"One hypothesis is that quantum phenomena could be involved. We will use nanophotonic techniques developed for semiconductor solid-state emitters to isolate single biomolecules that we will place within on-chip nanofabricated devices. By studying their emission properties under laser excitation, we aim to understand the role of quantum coherence in the energy transfer.

He added: "By understanding the fundamental processes in biosystems, we could reverse-engineer them to realise more efficient energy harvesters. Furthermore, the idea that room temperature, liquid phase, disordered systems could preserve coherence is tantalising - if we can understand how this happens, we could realise highly-coherent quantum emitters that could be used in quantum communication and quantum computing protocols relying on the storage of information in single photons.

"The support from the Gordon and Betty Moore Foundation will allow us to use our expertise in quantum optics and nano fabrication to explore the properties of biological systems - a novel approach that I hope will provide new insights in the field of quantum biology. I am very excited about this interdisciplinary project as it will take my research group in a new research direction."

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Published: 3 April 2020
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Dr Ömer Gürdoğan is one of nine UK-based Stephen Hawking Fellows.

Particle physicist Dr Ömer Gürdoğan will explore Quantum Field Theory as one of the country's first Stephen Hawking Fellows at the University of Southampton.

He is one of just nine UK-based academics selected by UK Research and Innovation for the prestigious new fellowships, which seek to further Professor Hawking's legacy by furthering our understanding of the universe and communicating the wonders of science to the public.

Ömer will focus on scattering amplitudes, which are the quantum probabilities of the interactions of fundamental particles, as he seeks to answer questions about how nature works at microscopic scales.

He will also conduct outreach activities including art exhibitions inspired by the geometric nature of his research, and interactive demonstrations using virtual reality.

The new fellowship will start within Southampton's School of Physics and Astronomy in January when Ömer returns from recent work as a post-doctoral researcher at the Mathematical Institute at the University of Oxford.

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Published: 19 March 2020
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(l-r) Dr Sadie Jones, Joy Richardson and Jessica Stead prepare for the STEM roller derby.

Roller derby athletes from the University of Southampton encouraged young people to explore science, technology, engineering and maths (STEM) careers in an inspirational STEMroller contest.

Dozens of female and non-binary pupils watched STEM role models compete in two combative games and then quizzed the players in speed networking sessions at the event in High Wycombe.

Physics and Astronomy's Dr Sadie Jones, nicknamed 'Shady Supernova', battled alongside Ocean and Earth Sciences 'Knitphomaniac' Jessica Stead for the Space Jammers.

Human Factors Engineering's Joy Richardson, known as 'JoyStixx', and biomedical scientist Kelly Wall also supported the event as referees and officials.

Roller derby is a contact sport where teams of skaters support or thwart 'jammers' as they attempt to lap opposing teams. Sadie is a member of the Portsmouth Roller Wenches, while Joy and Jessica play for the Southampton City Rollers.

"I love that I get to meet so many strong, fearless women in this sport," Sadie says. "Roller derby is amazing and I've totally fallen in love with it. I've made so many female friends and, because it's incredibly inclusive, people of all shapes and sizes can play and everyone can contribute."

Sadie is a key member of her School's Women's Physics Network and helped Physics and Astronomy secure an Athena SWAN Silver Award and Institute of Physics Juno Champion status for its commitment to tackling gender inequality.

"It's important to have STEM career events like this so young females and non-binary people are able to see that there are so many people like them who working in such a wide variety of STEM careers, and that they are often in jobs you would never think of, or never knew existed." Sadie says.

"I had loads of great questions from the young people I spoke to about my role as an Astronomy Outreach Leader. There was a lot of interest in my favourite parts of the job and what qualifications are needed for the work."

STEMroller included over 70 players and officials from more than 30 STEM industries. Four of the players have represented their countries in the Roller Derby World Cup.

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