1,521 research outputs found
Triple correlation of the Riemann zeros
We use the conjecture of Conrey, Farmer and Zirnbauer for averages of ratios
of the Riemann zeta function to calculate all the lower order terms of the
triple correlation function of the Riemann zeros. A previous approach was
suggested in 1996 by Bogomolny and Keating taking inspiration from
semi-classical methods. At that point they did not write out the answer
explicitly, so we do that here, illustrating that by our method all the lower
order terms down to the constant can be calculated rigourously if one assumes
the ratios conjecture of Conrey, Farmer and Zirnbauer. Bogomolny and Keating
returned to their previous results simultaneously with this current work, and
have written out the full expression. The result presented in this paper agrees
precisely with their formula, as well as with our numerical computations, which
we include here.
We also include an alternate proof of the triple correlation of eigenvalues
from random U(N) matrices which follows a nearly identical method to that for
the Riemann zeros, but is based on the theorem for averages of ratios of
characteristic polynomials
Riemann Zeros and Random Matrix Theory
In the past dozen years random matrix theory has become a useful tool for conjecturing answers to old and important questions in number theory. It was through the Riemann zeta function that the connection with random matrix theory was first made in the 1970s, and although there has also been much recent work concerning other varieties of L-functions, this article will concentrate on the zeta function as the simplest example illustrating the role of random matrix theory.
Developments in Random Matrix Theory
In this preface to the Journal of Physics A, Special Edition on Random Matrix
Theory, we give a review of the main historical developments of random matrix
theory. A short summary of the papers that appear in this special edition is
also given.Comment: 22 pages, Late
Discretisation for odd quadratic twists
The discretisation problem for even quadratic twists is almost understood,
with the main question now being how the arithmetic Delaunay heuristic
interacts with the analytic random matrix theory prediction. The situation for
odd quadratic twists is much more mysterious, as the height of a point enters
the picture, which does not necessarily take integral values (as does the order
of the Shafarevich-Tate group). We discuss a couple of models and present data
on this question.Comment: To appear in the Proceedings of the INI Workshop on Random Matrix
Theory and Elliptic Curve
Random Matrix Theory and the Fourier Coefficients of Half-Integral Weight Forms
Conjectured links between the distribution of values taken by the
characteristic polynomials of random orthogonal matrices and that for certain
families of L-functions at the centre of the critical strip are used to
motivate a series of conjectures concerning the value-distribution of the
Fourier coefficients of half-integral weight modular forms related to these
L-functions. Our conjectures may be viewed as being analogous to the Sato-Tate
conjecture for integral weight modular forms. Numerical evidence is presented
in support of them.Comment: 28 pages, 8 figure
Stochastic Models for Replication Origin Spacings in Eukaryotic DNA Replication
We consider eukaryotic DNA replication and in particular the role of
replication origins in this process. We focus on origins which are `active' -
that is, trigger themselves in the process before being read by the replication
forks of other origins. We initially consider the spacings of these active
replication origins in comparison to certain probability distributions of
spacings taken from random matrix theory. We see how the spacings between
neighbouring eigenvalues from certain collections of random matrices has some
potential for modelling the spacing between active origins. This suitability
can be further augmented with the use of uniform thinning which acts as a
continuous deformation between correlated eigenvalue spacings and exponential
(Poissonian) spacings. We model the process as a modified 2D Poisson process
with an added exclusion rule to identify active points based on their position
on the chromosome and trigger time relative to other origins. We see how this
can be reduced to a stochastic geometry problem and show analytically that two
active origins are unlikely to be close together, regardless of how many
non-active points are between them. In particular, we see how these active
origins repel linearly. We then see how data from various DNA datasets match
with simulations from our model. We see that whilst there is variety in the DNA
data, comparing the data with the model provides insight into the replication
origin distribution of various organisms.Comment: 18 pages, 26 figure
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