81 citations · 241 across the 11 of their papers we have counts for
14 papers
Steelhead: Interleaving Partially Synchronous and Asynchronous Commit Rules on a Shared DAG
George Danezis, Zeno De Angeli, Philipp Jovanovic +3
Dual-mode consensus protocols are fast when the network is partially synchronous and remain live under asynchrony. We introduce Steelhead, a dual-mode mechanism that composes a par…
Walrus: An Efficient Decentralized Storage Network
George Danezis, Giacomo Giuliari, Eleftherios Kokoris Kogias +4
Decentralized storage faces a fundamental trade-off between replication overhead, recovery efficiency, and security guarantees. Current approaches either rely on full replication,…
Hummingbird: Fast, Flexible, and Fair Inter-Domain Bandwidth Reservations
Karl Wüst, Giacomo Giuliari, Markus Legner +5
To realize the long-standing vision of providing quality-of-service (QoS) guarantees on a public Internet, this paper introduces Hummingbird: a lightweight QoS-system that provides…
Model-Based Insights on the Performance, Fairness, and Stability of BBR
Simon Scherrer, Markus Legner, Adrian Perrig +1
Google's BBR is the most prominent result of the recently revived quest for efficient, fair, and flexible congestion-control algorithms (CCAs). While the performance of BBR has bee…
An Axiomatic Perspective on the Performance Effects of End-Host Path Selection
Simon Scherrer, Markus Legner, Adrian Perrig +1
In various contexts of networking research, end-host path selection has recently regained momentum as a design principle. While such path selection has the potential to increase pe…
Enabling Novel Interconnection Agreements with Path-Aware Networking Architectures
Simon Scherrer, Markus Legner, Adrian Perrig +1
Path-aware networks (PANs) are emerging as an intriguing new paradigm with the potential to significantly improve the dependability and efficiency of networks. However, the benefit…
GMA: A Pareto Optimal Distributed Resource-Allocation Algorithm
Giacomo Giuliari, Marc Wyss, Markus Legner +1
To address the rising demand for strong packet delivery guarantees in networking, we study a novel way to perform graph resource allocation. We first introduce allocation graphs, i…
Incentivizing Stable Path Selection in Future Internet Architectures
Simon Scherrer, Markus Legner, Adrian Perrig +1
By delegating path control to end-hosts, future Internet architectures offer flexibility for path selection. However, there is a concern that the distributed routing decisions by e…
Magnetic Weyl and Dirac Kondo semimetal phases in heterostructures
Seulgi Ok, Markus Legner, Titus Neupert +1
We study a layered three-dimensional heterostructure in which two types of Kondo insulators are stacked alternatingly. One of them is the topological Kondo insulator SmB 6 , the ot…
Suppression of magnetic excitations near the surface of the topological Kondo insulator SmB6
P. K. Biswas, M. Legner, G. Balakrishnan +8
We present a detailed investigation of the temperature and depth dependence of the magnetic properties of 3D topological Kondo insulator SmB6 , in particular near its surface. We f…
Correlation Length, Universality Classes, and Scaling Laws Associated with Topological Phase Transitions
Wei Chen, Markus Legner, Andreas Rüegg +1
The correlation functions related to topological phase transitions in inversion-symmetric lattice models described by Dirac Hamiltonians are discussed. In one dimension…
Surface-state spin textures and mirror Chern numbers in topological Kondo insulators
Markus Legner, Andreas Rüegg, Manfred Sigrist
The recent discovery of topological Kondo insulators has triggered renewed interest in the well-known Kondo insulator samarium hexaboride, which is hypothesized to belong to this f…
Topological invariants, surface states, and interaction-driven phase transitions in correlated Kondo insulators with cubic symmetry
Markus Legner, Andreas Rüegg, Manfred Sigrist
We construct a lattice model for a cubic Kondo insulator consisting of one spin-degenerate and orbital at each lattice site. The odd-parity hybridization between the two or…
Relating the entanglement spectrum of noninteracting band insulators to their quantum geometry and topology
Markus Legner, Titus Neupert
We study the entanglement spectrum of noninteracting band insulators, which can be computed from the two-point correlation function, when restricted to one part of the system. In p…