All Outputs (55)

Decoding Nature with Nature's Tools: Heterotic Line Bundle Models of Particle Physics with Genetic Algorithms and Quantum Annealing (2023)
Journal Article
Abel, S. A., Constantin, A., Harvey, T. R., Lukas, A., & Nutricati, L. A. (2023). Decoding Nature with Nature's Tools: Heterotic Line Bundle Models of Particle Physics with Genetic Algorithms and Quantum Annealing. Fortschritte der Physik, https://doi.org/10.1002/prop.202300260

The string theory landscape may include a multitude of ultraviolet embeddings of the Standard Model, but identifying these has proven difficult due to the enormous number of available string compactifications. Genetic Algorithms (GAs) represent a pow... Read More about Decoding Nature with Nature's Tools: Heterotic Line Bundle Models of Particle Physics with Genetic Algorithms and Quantum Annealing.

String Model Building on Quantum Annealers (2023)
Journal Article
Abel, S., Nutricati, L. A., & Rizos, J. (2023). String Model Building on Quantum Annealers. Fortschritte der Physik, 71(12), Article 2300167. https://doi.org/10.1002/prop.202300167

For the first time the direct construction of string models on quantum annealers has been explored and has been investigated their efficiency and effectiveness in the model discovery process. Through a thorough comparison with traditional methods suc... Read More about String Model Building on Quantum Annealers.

Running of gauge couplings in string theory (2023)
Journal Article
Abel, S., Dienes, K. R., & Nutricati, L. A. (2023). Running of gauge couplings in string theory. Physical Review D, 107(12), Article 126019. https://doi.org/10.1103/physrevd.107.126019

In this paper we conduct a general, model-independent analysis of the running of gauge couplings within closed string theories. Unlike previous discussions in the literature, our calculations fully respect the underlying modular invariance of the str... Read More about Running of gauge couplings in string theory.

Cosmic Inflation and Genetic Algorithms (2022)
Journal Article
Abel, S. A., Constantin, A., Harvey, T. R., & Lukas, A. (2023). Cosmic Inflation and Genetic Algorithms. Fortschritte der Physik, 71(1), https://doi.org/10.1002/prop.202200161

Large classes of standard single-field slow-roll inflationary models consistentwith the required number of e-folds, the current bounds on the spectral indexof scalar perturbations, the tensor-to-scalar ratio, and the scale of inflation canbe efficien... Read More about Cosmic Inflation and Genetic Algorithms.

Quantum optimization of complex systems with a quantum annealer (2022)
Journal Article
Abel, S., Blance, A., & Spannowsky, M. (2022). Quantum optimization of complex systems with a quantum annealer. Physical Review A, 106(4), https://doi.org/10.1103/physreva.106.042607

We perform an in-depth comparison of quantum annealing with several classical optimization techniques, namely, thermal annealing, Nelder-Mead, and gradient descent. The focus of our study is large quasicontinuous potentials that must be encoded using... Read More about Quantum optimization of complex systems with a quantum annealer.

Ising Machines for Diophantine Problems in Physics (2022)
Journal Article
Abel, S. A., & Nutricati, L. A. (2022). Ising Machines for Diophantine Problems in Physics. Fortschritte der Physik, 70(11), Article 2200114. https://doi.org/10.1002/prop.202200114

Diophantine problems arise frequently in physics, in for example anomaly cancellation conditions, string consistency conditions and so forth. We present methods to solve such problems to high order on annealers that are based on the quadratic Ising M... Read More about Ising Machines for Diophantine Problems in Physics.

Completely quantum neural networks (2022)
Journal Article
Abel, S., Criado, J. C., & Spannowsky, M. (2022). Completely quantum neural networks. Physical Review A, 106(2), Article 022601. https://doi.org/10.1103/physreva.106.022601

Artificial neural networks are at the heart of modern deep learning algorithms. We describe how to embed and train a general neural network in a quantum annealer without introducing any classical element in training. To implement the network on a sta... Read More about Completely quantum neural networks.

Evolving Heterotic Gauge Backgrounds: Genetic Algorithms versus Reinforcement Learning (2022)
Journal Article
Abel, S., Constantin, A., Harvey, T. R., & Lukas, A. (2022). Evolving Heterotic Gauge Backgrounds: Genetic Algorithms versus Reinforcement Learning. Fortschritte der Physik, 70(5), Article 2200034. https://doi.org/10.1002/prop.202200034

The immensity of the string landscape and the difficulty of identifying solutions that match the observed features of particle physics have raised serious questions about the predictive power of string theory. Modern methods of optimisation and searc... Read More about Evolving Heterotic Gauge Backgrounds: Genetic Algorithms versus Reinforcement Learning.

Calculating the Higgs mass in string theory (2021)
Journal Article
Abel, S., & Dienes, K. R. (2021). Calculating the Higgs mass in string theory. Physical Review D, 104(12), https://doi.org/10.1103/physrevd.104.126032

In this paper, we establish a fully string-theoretic framework for calculating one-loop Higgs masses directly from first principles in perturbative closed-string theories. Our framework makes no assumptions other than world sheet modular invariance a... Read More about Calculating the Higgs mass in string theory.

Quantum-Field-Theoretic Simulation Platform for Observing the Fate of the False Vacuum (2021)
Journal Article
Abel, S., & Spannowsky, M. (2021). Quantum-Field-Theoretic Simulation Platform for Observing the Fate of the False Vacuum. PRX Quantum, 2(1), Article 010349. https://doi.org/10.1103/prxquantum.2.010349

We design and implement a quantum annealing simulation platform to observe and study dynamical processes in quantum field theory (QFT). Our approach encodes the field theory as an Ising model, which is then solved by a quantum annealer. As a proof of... Read More about Quantum-Field-Theoretic Simulation Platform for Observing the Fate of the False Vacuum.

Quantum computing for quantum tunneling (2021)
Journal Article
Abel, S., Chancellor, N., & Spannowsky, M. (2021). Quantum computing for quantum tunneling. Physical Review D, 103(1), Article 016008. https://doi.org/10.1103/physrevd.103.016008

We demonstrate how quantum field theory problems can be practically encoded by using a discretization of the field theory problem into a general Ising model, with the continuous field values being encoded into Ising spin chains. To illustrate the met... Read More about Quantum computing for quantum tunneling.

Worldline theories with towers of internal states (2020)
Journal Article
Abel, S., & Lewis, D. (2020). Worldline theories with towers of internal states. Journal of High Energy Physics, 2020(12), Article 69. https://doi.org/10.1007/jhep12%282020%29069

We study particle theories that have a tower of worldline internal degrees of freedom. Such a theory can arise when the worldsheet of closed strings is dimensionally reduced to a worldline, in which case the tower is infinite with regularly spaced ma... Read More about Worldline theories with towers of internal states.

A systematic approach to Kähler moduli stabilisation (2020)
Journal Article
AbdusSalam, S., Abel, S., Cicoli, M., Quevedo, F., & Shukla, P. (2020). A systematic approach to Kähler moduli stabilisation. Journal of High Energy Physics, 2020(8), Article 047. https://doi.org/10.1007/jhep08%282020%29047

Achieving full moduli stabilisation in type IIB string compactifications for generic Calabi-Yau threefolds with hundreds of Kähler moduli is notoriously hard. This is due not just to the very fast increase of the computational complexity with the num... Read More about A systematic approach to Kähler moduli stabilisation.

On the stability of open-string orbifold models with broken supersymmetry (2020)
Journal Article
Abel, S., Coudarchet, T., & Partouche, H. (2020). On the stability of open-string orbifold models with broken supersymmetry. Nuclear Physics B, 957, Article 115100. https://doi.org/10.1016/j.nuclphysb.2020.115100

We consider an open-string realisation of spontaneous breaking of supersymmetry in four-dimensional Minkowski spacetime. It is based on type IIB orientifold theory compactified on , with Scherk–Schwarz supersymmetry breaking implemented along . We sh... Read More about On the stability of open-string orbifold models with broken supersymmetry.

Nonlocal gravity with worldline inversion symmetry (2020)
Journal Article
Abel, S., Buoninfante, L., & Mazumdar, A. (2020). Nonlocal gravity with worldline inversion symmetry. Journal of High Energy Physics, 2020(1), Article 3. https://doi.org/10.1007/jhep01%282020%29003

We construct a quadratic curvature theory of gravity whose graviton propagator around the Minkowski background respects wordline inversion symmetry, the particle approximation to modular invariance in string theory. This symmetry automatically yields... Read More about Nonlocal gravity with worldline inversion symmetry.

BPS solutions for generalised Wess-Zumino models and their applications (2019)
Journal Article
Abel, S., Bonnefoy, Q., & Chowdhury, D. (2019). BPS solutions for generalised Wess-Zumino models and their applications. Journal of High Energy Physics, 2019(10), Article 242. https://doi.org/10.1007/jhep10%282019%29242

We present BPS solutions to a general class of Wess-Zumino models which ex- tend previous results in the literature. We discuss their relation to amplitudes on threshold, and their application to scalar domain walls in Supersymmetric QCD. We also fin... Read More about BPS solutions for generalised Wess-Zumino models and their applications.

Stability and Vacuum Energy in Open String Models with Broken Supersymmetry (2019)
Journal Article
Abel, S., Dudas, E., Lewis, D., & Partouche, H. (2019). Stability and Vacuum Energy in Open String Models with Broken Supersymmetry. Journal of High Energy Physics, 2019(10), Article 226. https://doi.org/10.1007/jhep10%282019%29226

We construct type I string models with supersymmetry broken by compactifi- cation that are non-tachyonic and have exponentially small effective potential at one-loop. All open string moduli can be stabilized, while the closed string moduli remain mas... Read More about Stability and Vacuum Energy in Open String Models with Broken Supersymmetry.

Out-of-the-box baryogenesis during relaxation (2019)
Journal Article
Abel, S., Gupta, R., & Scholtz, J. (2019). Out-of-the-box baryogenesis during relaxation. Physical Review D, 100, Article 015034. https://doi.org/10.1103/physrevd.100.015034

We show that spontaneous baryogenesis occurs automatically in relaxion models if the reheating temperature is larger than the weak scale, provided the Standard Model fields are charged under the U(1) of which the relaxion is a pseudo-Nambu-Goldstone... Read More about Out-of-the-box baryogenesis during relaxation.

UV completion on the worldline (2019)
Journal Article
Abel, S., & Dondi, N. A. (2019). UV completion on the worldline. Journal of High Energy Physics, 2019(7), Article 90. https://doi.org/10.1007/jhep07%282019%29090

A framework for UV completing particle theories is proposed, based on the worldline formalism, which is equivalent to weighting all sums over histories with a propertime dependent measure that has a smallest proper-time. We deduce a criterion to avoi... Read More about UV completion on the worldline.

Dual renormalization group flows in 4D (2019)
Journal Article
Abel, S., Bajc, B., & Sannino, F. (2019). Dual renormalization group flows in 4D. Physical Review D, 99(6), Article 065001. https://doi.org/10.1103/physrevd.99.065001

We present a prescription for using the a central charge to determine the flow of a strongly coupled supersymmetric theory from its weakly coupled dual. The approach is based on the equivalence of the scale-dependent a parameter derived from the four... Read More about Dual renormalization group flows in 4D.