# Scaling limits of dS vacua and the swampland

- Institution: CERN
- Department: Conferences & Workshops
- Speaker: Christoph Roupec
- Year: 2019
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3016386)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

I discuss the properties of massive type IIA flux compactifications. In particular, I will talk about in which cases one can obtain dS vacua at large volume and small coupling. The scaling symmetries will also be discussed in a concrete example. The conclusion of the talk will be that the large volume and weak coupling limit requires a large number of O6-planes. Since these are bound for any given compactification space one cannot get arbitrarily good control over α 0 and string loop corrections..

0:00:00 Slide 1

0:00:16 Slide 2

0:00:22 Slide 3

0:01:35 Slide 4

0:01:55 Slide 5

0:03:18 Slide 6

0:04:14 Slide 7

0:05:08 Slide 8

0:06:15 Slide 9

0:06:40 Slide 10

0:07:10 Slide 11

0:08:02 Slide 12

0:08:25 Slide 13

0:08:54 Slide 14

0:09:28 Slide 15

0:10:01 Slide 16

0:10:17 Slide 17

0:10:45 Slide 18

0:11:18 Slide 19

0:11:33 Slide 20

0:11:37 Slide 21

## Lectures

1. [Scaling limits of dS vacua and the swampland](https://invisiblenetwork.ai/learn/cern/3016386/2772c8975a8b), 14 min (CERN's player)