{"action":"created","issue":{"url":"https://api.github.com/repos/TRIQS/triqs/issues/606","repository_url":"https://api.github.com/repos/TRIQS/triqs","labels_url":"https://api.github.com/repos/TRIQS/triqs/issues/606/labels{/name}","comments_url":"https://api.github.com/repos/TRIQS/triqs/issues/606/comments","events_url":"https://api.github.com/repos/TRIQS/triqs/issues/606/events","html_url":"https://github.com/TRIQS/triqs/issues/606","id":340313213,"node_id":"MDU6SXNzdWUzNDAzMTMyMTM=","number":606,"title":"Multiple FT crashes TRIQS","user":{"login":"mzingl","id":9419188,"node_id":"MDQ6VXNlcjk0MTkxODg=","avatar_url":"https://avatars0.githubusercontent.com/u/9419188?v=4","gravatar_id":"","url":"https://api.github.com/users/mzingl","html_url":"https://github.com/mzingl","followers_url":"https://api.github.com/users/mzingl/followers","following_url":"https://api.github.com/users/mzingl/following{/other_user}","gists_url":"https://api.github.com/users/mzingl/gists{/gist_id}","starred_url":"https://api.github.com/users/mzingl/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mzingl/subscriptions","organizations_url":"https://api.github.com/users/mzingl/orgs","repos_url":"https://api.github.com/users/mzingl/repos","events_url":"https://api.github.com/users/mzingl/events{/privacy}","received_events_url":"https://api.github.com/users/mzingl/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2018-07-11T16:17:57Z","updated_at":"2018-07-12T09:42:49Z","closed_at":null,"author_association":"MEMBER","body":"```\r\nfrom` pytriqs.gf import GfImFreq, iOmega_n, inverse\r\n# GF\r\ng = GfImFreq(indices = [0], beta = 200, n_points = 1000)\r\ngt = GfImTime(indices = [0], beta = 200)\r\na = 2.0\r\ng << inverse( iOmega_n + a)\r\n# Do FT multiple times \r\nit = 200\r\n# err measures how well G_ij(iw) = G*_ij(-iw) is fullfilled\r\nerr = np.zeros(it)\r\nfor i in range(it):\r\n    gt << InverseFourier(g)\r\n    g << Fourier(gt)\r\n    err[i] = np.linalg.norm(g.data[0,:,:] - np.transpose(np.conj(g.data[-1,:,:])))\r\nprint g.data[0,:,:] - np.transpose(np.conj(g.data[-1,:,:]))\r\nprint err\r\n```\r\n\r\nCode crashes  with ERROR: Inverse Fourier implementation requires vanishing 0th moment\r\nAlso: err is growing with i"},"comment":{"url":"https://api.github.com/repos/TRIQS/triqs/issues/comments/404454503","html_url":"https://github.com/TRIQS/triqs/issues/606#issuecomment-404454503","issue_url":"https://api.github.com/repos/TRIQS/triqs/issues/606","id":404454503,"node_id":"MDEyOklzc3VlQ29tbWVudDQwNDQ1NDUwMw==","user":{"login":"mferrero","id":1138525,"node_id":"MDQ6VXNlcjExMzg1MjU=","avatar_url":"https://avatars1.githubusercontent.com/u/1138525?v=4","gravatar_id":"","url":"https://api.github.com/users/mferrero","html_url":"https://github.com/mferrero","followers_url":"https://api.github.com/users/mferrero/followers","following_url":"https://api.github.com/users/mferrero/following{/other_user}","gists_url":"https://api.github.com/users/mferrero/gists{/gist_id}","starred_url":"https://api.github.com/users/mferrero/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mferrero/subscriptions","organizations_url":"https://api.github.com/users/mferrero/orgs","repos_url":"https://api.github.com/users/mferrero/repos","events_url":"https://api.github.com/users/mferrero/events{/privacy}","received_events_url":"https://api.github.com/users/mferrero/received_events","type":"User","site_admin":false},"created_at":"2018-07-12T09:42:49Z","updated_at":"2018-07-12T09:42:49Z","author_association":"MEMBER","body":"Can you try to make the number of frequencies larger, say 5000 instead of 1000?"}}
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