<｜begin▁of▁sentence｜>### Instruction:
As a data scientist working in a research organization, you have been tasked with analyzing collaboration patterns within the field of condensed matter physics. You have access to the Condensed Matter Collaborations Graph from 2005, which is stored in a GML file named 'cond-mat-2005.gml'. Using the RBerPots algorithm provided by the cdlib library, you need to detect communities within the graph. Once the communities are detected, you should convert the results into a JSON format and present them for further analysis by the research team.
### Response:
import networkx as nx
from cdlib import algorithms

# Load the Condensed Matter Collaborations Graph from 2005
G = nx.read_gml('cond-mat-2005.gml')

# Apply the RBerPots algorithm with default parameters
communities = algorithms.rber_pots(G)

# Output the communities as JSON
communities_json = communities.to_json()
print(communities_json)
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