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LCPQ · Oct 2, 2023 · ce629d3 · ce629d3
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   "headline": "Presentations",
   "description" : "SUBMITTED ABSTRACTS Arjan Berger (LCPQ, Toulouse) The one-point model: solving equations in pointland\nIn the one-point model we consider a zero-dimensional space. The advantage of this model is that the many-body equations simplify enormously and can be solved analytically. In particular, the one-body Greenʼs function is a solution of a set of functional integro-differential equations, which relate the one-particle Greenʼs function to its functional derivative with respect to an external potential [1].",
   "inLanguage" : "en",
-  "wordCount":  179 ,
+  "wordCount":  310 ,
   "datePublished" : "0001-01-01T00:00:00",
   "dateModified" : "0001-01-01T00:00:00",
   "image" : "https:\/\/lcpq.github.io\/MSQM\/img\/sphericalcow.png",
@@ -272,6 +272,11 @@ <h3 id="antoine-levitt-lmo-orsay">Antoine Levitt (LMO, Orsay)</h3>
 <p><strong>TBA</strong></p>
 <h3 id="peter-gill-usyd-sydney">Peter Gill (USyd, Sydney)</h3>
 <p><strong>TBA</strong></p>
+<h3 id="eric-cancès-cermics-paris">Eric Cancès (CERMICS, Paris)</h3>
+<p><strong>Model systems for discretization error analysis</strong></p>
+<p>In the first part of my talk, I will present a detailed analysis of the famous error cancellation phenomenon in electronic structure calculation on the example of a 1D Hamiltonian with Dirac-delta potentials and periodic boundary conditions [1]. In the second part of my talk, I will illustrate the importance of continuous spectrum (scattering states) in quantum chemistry by numerical calculations based on the explicit knowledge of the bound states of the hydrogen atom [2].</p>
+<p>[1] E. Cancès and G. Dusson, Discretization error cancellation in electronic structure calculation: toward a quantitative study, M2AN 51 (2017) 1617–1636
+[2] E. Cancès, R. Coyaud and L.R. Scott, Van der Waals interactions between two hydrogen atoms: the next orders, Comm. Math. Sci. 21 (2023) 915–948.</p>
 <h1 id="posters">POSTERS</h1>
 <h3 id="vitaly-gorelov-lsi-palaiseau">Vitaly Gorelov (LSI, Palaiseau)</h3>
 <p><strong>TBA</strong></p>