From a88e086debc8d234f1120f8426384d06408b85fe Mon Sep 17 00:00:00 2001 From: Jaron Kent-Dobias Date: Fri, 18 Dec 2020 15:44:27 +0100 Subject: Added note and citation. --- bezout.bib | 14 +++++++++++++- bezout.tex | 29 ++++++++++++++++++----------- 2 files changed, 31 insertions(+), 12 deletions(-) diff --git a/bezout.bib b/bezout.bib index ae12521..022f5ea 100644 --- a/bezout.bib +++ b/bezout.bib @@ -5,7 +5,6 @@ publisher = {Springer Science and Business Media LLC}, year = {2016}, month = {12}, - number = {71}, volume = {2016}, pages = {71}, url = {https://doi.org/10.1007%2Fjhep12%282016%29071}, @@ -228,6 +227,19 @@ subtitle = {Theory and Practice} } +@article{Manschot_2012_From, + author = {Manschot, Jan and Pioline, Boris and Sen, Ashoke}, + title = {From black holes to quivers}, + journal = {Journal of High Energy Physics}, + publisher = {Springer Science and Business Media LLC}, + year = {2012}, + month = {11}, + volume = {2012}, + pages = {23}, + url = {https://doi.org/10.1007%2Fjhep11%282012%29023}, + doi = {10.1007/jhep11(2012)023} +} + @article{Nguyen_2014_The, author = {Nguyen, Hoi H. and O'Rourke, Sean}, title = {The Elliptic Law}, diff --git a/bezout.tex b/bezout.tex index 45820c4..d7f6399 100644 --- a/bezout.tex +++ b/bezout.tex @@ -103,9 +103,9 @@ critical points nearly everywhere: if $H$ were so constrained, then $0=\partial^* H=-p\epsilon z$ would only be satisfied for $\epsilon=0$. The critical points are of $H$ given by the solutions to the set of equations -\begin{equation} +\begin{equation} \label{eq:polynomial} \frac{p}{p!}\sum_{j_1\cdots j_{p-1}}^NJ_{ij_1\cdots j_{p-1}}z_{j_1}\cdots z_{j_{p-1}} - = p\epsilon z_i \label{cosa} + = p\epsilon z_i \end{equation} for all $i=\{1,\ldots,N\}$, which for fixed $\epsilon$ is a set of $N$ equations of degree $p-1$, to which one must add the constraint. @@ -113,7 +113,7 @@ In this sense this study also provides a complement to the work on the distribution of zeroes of random polynomials \cite{Bogomolny_1992_Distribution}, which are for $N=1$ and $p\to\infty$. -We see from (\ref{cosa}) that at any critical point, $\epsilon=H/N$, the average energy. +We see from \eqref{eq:polynomial} that at any critical point, $\epsilon=H/N$, the average energy. Since $H$ is holomorphic, any critical point of $\operatorname{Re}H$ is also a critical point of $\operatorname{Im}H$. The number of critical points of $H$ is @@ -339,13 +339,20 @@ values of $\kappa$ and $\epsilon$. Taking this saddle gives \log\overline{\mathcal N}(\kappa,\epsilon) =N\log(p-1). \end{equation} -This is, to this order, precisely the Bézout bound, the maximum number of solutions that $N$ -equations of degree $p-1$ may have \cite{Bezout_1779_Theorie}. More insight is -gained by looking at the count as a function of $a$, defined by $\overline{\mathcal -N}(\kappa,\epsilon,a)=e^{Nf(a)}$. In the large-$N$ limit, this is the -cumulative number of critical points, or the number of critical points $z$ for -which $|z|^2\leq a$. We likewise define the $a$-dependant complexity -$\Sigma(\kappa,\epsilon,a)=N\log\overline{\mathcal N}(\kappa,\epsilon,a)$ +This is, to this order, precisely the Bézout bound, the maximum number of +solutions that $N$ equations of degree $p-1$ may have +\cite{Bezout_1779_Theorie}. That we saturate this bound is perhaps not +surprising, since the coefficients of our polynomial equations +\eqref{eq:polynomial} are complex and have no symmetries. Analogous asymptotic +scaling has been found for the number of pure Higgs states in supersymmetric +quiver theories \cite{Manschot_2012_From}. + +More insight is gained by looking at the count as a function of $a$, defined by +$\overline{\mathcal N}(\kappa,\epsilon,a)=e^{Nf(a)}$. In the large-$N$ limit, +this is the cumulative number of critical points, or the number of critical +points $z$ for which $|z|^2\leq a$. We likewise define the $a$-dependant +complexity $\Sigma(\kappa,\epsilon,a)=N\log\overline{\mathcal +N}(\kappa,\epsilon,a)$ \begin{figure}[htpb] \centering @@ -443,7 +450,7 @@ threshold level, where the system develops a mid-spectrum gap, will play a crucial role as it does in the real case. \begin{acknowledgments} -We wish to thank Alexander Altland, Satya Majumdar and Gregory Schehr for a useful suggestions. + We wish to thank Alexander Altland, Satya Majumdar and Gregory Schehr for a useful suggestions. JK-D and JK are supported by the Simons Foundation Grant No.~454943. \end{acknowledgments} -- cgit v1.2.3-70-g09d2