diff --git a/isospectral.tex b/isospectral.tex index 034ad31..2259db0 100644 --- a/isospectral.tex +++ b/isospectral.tex @@ -44,7 +44,7 @@ \begin{frame}{The silver lining} \begin{itemize} - \item Isospectral pairs are intriguing in their own right, but they cannot occur in dimension $3$. + \item Isospectral manifolds are intriguing in their own right, but in dimension 3 all isospectral manifolds are isometric. \item We can thus attempt to infer the shape of our universe based on its spectrum. \end{itemize} \end{frame} diff --git a/main.tex b/main.tex index ed55636..34a0d48 100644 --- a/main.tex +++ b/main.tex @@ -44,9 +44,9 @@ code-for-last-col = \color{blue} } -\title{Computing CMB temperature fluctuations for spherical spaces} +\title{Computing CMB Temperature Fluctuations for Spherical Spaces} \author{Adriel Matei, Béla Schneider, Javier Vela, Juš Kocutar} -%\institute{Presenting: Javier, Juš} +\institute{University of Groningen} \date{March 24, 2025} @@ -97,7 +97,7 @@ code-for-last-col = \color{blue} (\Delta + E_{\textcolor{red}{\beta}}^{\textcolor{blue}{M}})\psi_{\textcolor{red}{\beta}}^{{\textcolor{blue}{M}}, i} = 0. \end{align*} \pause - \item In fact $E_{\textcolor{red}{\beta}}^m = {\textcolor{red}{\beta}}^2-1$ for $\textcolor{red}{\beta} \in \mathbb{N}$. We call $\textcolor{red}{\beta}$ a wave number. + \item In fact $E_{\textcolor{red}{\beta}}^M = {\textcolor{red}{\beta}}^2-1$ for $\textcolor{red}{\beta} \in \mathbb{N}$. We call $\textcolor{red}{\beta}$ a wave number. \pause \item The set of all possible wave numbers [for which a nonzero solution exists] depends on $\Gamma$ - usually a proper subset of $\mathbb{{N}}$. \pause @@ -141,6 +141,7 @@ code-for-last-col = \color{blue} \begin{frame}{Inhomogeneous spherical space} \begin{itemize} + \pause \item Manifolds of the form $\S^3/\Gamma$ with $\Gamma$ a group acting on $\S^3$. \item \textcolor{red}{Multi-connected} space: it has non-contractable loops. \item \textcolor{red}{Inhomogeneous} space: it does not look identical from every point in space. @@ -170,7 +171,7 @@ code-for-last-col = \color{blue} \Delta T(\hat{n}) = \sum_{\ell=0}^{\infty} \sum_{m=-\ell}^{\ell} \textcolor{blue}{a_{\ell m}} Y_{\ell m}(\hat{n}) \] \pause - \item If the universe is isotropic, the \textbf{mean of the harmonic coefficients} should satisfy: + \item If the universe is \textcolor{red}{isotropic, the \textbf{mean of the harmonic coefficients} should satisfy: \[ \langle \textcolor{blue}{a_{\ell m}} \rangle = 0 \] @@ -227,7 +228,7 @@ code-for-last-col = \color{blue} \textbf{Possible Explanations:} \begin{itemize} \item A real cosmological signal? → A finite universe or new physics. - \item A systematic effect? → Foreground contamination or instrumental noise. + \item A systematic effect? → Technological or theory related limitations. \end{itemize} \end{columns} \end{frame} diff --git a/prerequisites.tex b/prerequisites.tex index cef5766..0df25fc 100644 --- a/prerequisites.tex +++ b/prerequisites.tex @@ -3,7 +3,7 @@ \begin{figure}[H] \centering \includegraphics[width=0.5\linewidth]{mug-neighbourhoods.png} - \caption{The prototypical example of a manifold a mug [13].} + \caption{The prototypical example of a manifold -- a mug [13].} \label{fig:mug-neighbourhoods} \end{figure} \pause