Before revision:  This improves over the previously fastest classical (which is also the fastest quantum) algorithm due to [ADRS15] that has a time and space complexity 2^{n+o(n)}. \bullet A classical algorithm for SVP that runs in time 2^{1.73n+o(n)} time and 2^{0.5n+o(n)} space and improves over an algorithm from [CCL18] that has the same space complexity.
After revision:  This improves over the previously fastest classical (which is also the fastest quantum) algorithm due to [ADRS15] that has a time and space complexity 2^{n+o(n)}. \bullet A classical algorithm for SVP that runs in time 2^{1.73n+o(n)} time and 2^{0.5n+o(n)} space and improves over an algorithm of [CCL18] that has the same space complexity.