Results 21 to 30 of about 1,112,271 (324)

A solvable model of flat space holography

open access: yesJournal of High Energy Physics, 2023
We propose an explicit realization of flat space holography in two dimensions where both sides of the duality are independently defined and the boundary theory is completely solvable.
Felipe Rosso
doaj   +1 more source

Practical challenges in data‐driven interpolation: Dealing with noise, enforcing stability, and computing realizations

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary In this contribution, we propose a detailed study of interpolation‐based data‐driven methods that are of relevance in the model reduction and also in the systems and control communities. The data are given by samples of the transfer function of the underlying (unknown) model, that is, we analyze frequency‐response data.
Quirin Aumann, Ion Victor Gosea
wiley   +1 more source

Data‐driven performance metrics for neural network learning

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary Effectiveness of data‐driven neural learning in terms of both local mimima trapping and convergence rate is addressed. Such issues are investigated in a case study involving the training of one‐hidden‐layer feedforward neural networks with the extended Kalman filter, which reduces the search for the optimal network parameters to a state ...
Angelo Alessandri   +2 more
wiley   +1 more source

An analytic formula for numbers of restricted partitions from conformal field theory [PDF]

open access: yesAdvances in Theoretical and Mathematical Physics, 2018
We study the correlators of irregular vertex operators in two-dimensional conformal field theory (CFT) in order to propose an exact analytic formula for calculating numbers of partitions, that is: 1) for given $N,k$, finding the total number $ (N|k)$ of length $k$ partitions of $N$: $N=n_1+...+n_k ...
openaire   +5 more sources

Deconstructing little strings with $\mathcal{N}=1$ gauge theories on ellipsoids

open access: yesSciPost Physics, 2018
A formula was recently proposed for the perturbative partition function of certain $\mathcal N=1$ gauge theories on the round four-sphere, using an analytic-continuation argument in the number of dimensions.
Joseph Hayling, Rodolfo Panerai, Constantinos Papageorgakis
doaj   +1 more source

Odd-flavored QCD_3 and Random Matrix Theory [PDF]

open access: yes, 1998
We consider QCD_3 with an odd number of flavors in the mesoscopic scaling region where the field theory finite-volume partition function is equivalent to a random matrix theory partition function.
Akemann   +16 more
core   +2 more sources

Noncommutative Cohomological Field Theory and GMS soliton [PDF]

open access: yes, 2001
We show that it is possible to construct a quantum field theory that is invariant under the translation of the noncommutative parameter $\theta_{\mu\nu}$. This is realized in a noncommutative cohomological field theory.
Ishikawa, Tomomi   +2 more
core   +2 more sources

On Domatic Number of Some Rotationally Symmetric Graphs

open access: yesJournal of Mathematics, 2023
Domination is a well-known graph theoretic concept due to its significant real-world applications in several domains, such as design and communication network analysis, coding theory, and optimization.
Hassan Raza   +2 more
doaj   +1 more source

Entanglement content of quantum particle excitations. III. Graph partition functions [PDF]

open access: yesJournal of Mathematics and Physics, 2019
We consider two measures of entanglement, the logarithmic negativity and the entanglement entropy, between regions of space in excited states of many-body systems formed by a finite number of particle excitations.
O. Castro-Alvaredo   +3 more
semanticscholar   +1 more source

Holomorphic Anomalies in Topological Field Theories [PDF]

open access: yes, 1993
We study the stringy genus one partition function of $N=2$ SCFT's. It is shown how to compute this using an anomaly in decoupling of BRST trivial states from the partition function.
Aspinwall   +37 more
core   +3 more sources

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