Articles
![]() |
02/01/2007--
02/01/2007
Multiparticle production in the Glasma at NLO and plasma instabilities
We discuss the relation between multi-particle production in the Glasma at
next-to-leading order and the physics of plasma instabilities.
Raju Venugopalan
08/10/1998--
08/10/1998
Introduction to light cone field theory and high energy scattering
In this set of four lectures, we provide an elementary introduction to light
cone field theory and some of its applications in high energy scattering.
Raju Venugopalan
04/05/2008--
04/05/2008
Time Travel and the Reality of Spontaneity
Contrary to the informed consensus, time travel implies spontaneity (as
distinct from chance) so that time travel can only be of the second kind.
C. K. Raju
02/13/2012--
02/13/2012
High Voltage Generation for Physics Lab
A power efficient way to generate low power high voltage is given. The
article describes various aspects of functioning and derives quantitative
relations between different parameters and high voltage generated. Use of
voltage multiplier (Cockcroft-Walton multiplier) network can provide further
boost in the high voltage(~1000V).
Raju Baddi
12/27/2016--
12/27/2016
The initial state and hard probes: a brief review
We provide a brief review of some of the recent developments in our
understanding of the initial state in ultra-relativistic heavy-ion collisions.
Raju Venugopalan
09/09/2023--
09/09/2023
Characterizations of strictly convex spaces and proximal uniform normal structure
We provide a few characterizations of a strictly convex Banach space. Using
this we improve the main theorem of [Digar, Abhik; Kosuru, G. Sankara Raju;
Cyclic uniform Lipschitzian mappings and proximal uniform normal structure.
Ann. Funct. Anal. 13 (2022)].
Abhik Digar
G. Sankara Raju Kosuru
04/23/2023--
04/23/2023
Interplay of viscosity and wettability controls fluid displacement in porous media
Direct numerical simulations are used to elucidate the interplay of
wettability and fluid viscosities on immiscible fluid displacements in a
heterogeneous porous medium.We classify the flow regimes based using
qualitative and quantitative analysis into viscous fingering (low $M$), compact
displacement (high $M$), and an intermediate transition regime ($M \approx 1$).
We use stability analysis to obtain theoretical phase boundaries between these
regimes, which agree well with our analyses. At the macroscopic (sample) scale,
we find that wettability strongly controls the threshold $M$ (at which the
regimes change). At the pore scale, wettability alters the dominant
pore-filling mechanism. At very small $M$ (viscous fingering regime), smaller
pore spaces are preferentially invaded during imbibition, with flow of films of
invading fluid along the pore walls. In contrast, during drainage, bursts
result in filling of pores irrespective of their size. As $M$ increases, the
effect of wettability decreases as cooperative filling becomes the dominant
mechanism regardless of wettability. This suggest that for imbibition at a
given contact angle, decreasing $M$ is associated with change in effective
wetting from neutral-wet (cooperative filling) to strong-wet (film flow).
Saideep Pavuluri
Ran Holtzman
Luqman Kazeem
Malyah Mohammed
Thomas Daniel Seers
Harris Sajjad Rabbani
02/15/2025--
02/15/2025
Hybrid Brain-Machine Interface: Integrating EEG and EMG for Reduced Physical Demand
We present a hybrid brain-machine interface (BMI) that integrates
steady-state visually evoked potential (SSVEP)-based EEG and facial EMG to
improve multimodal control and mitigate fatigue in assistive applications.
Traditional BMIs relying solely on EEG or EMG suffer from inherent limitations;
EEG-based control requires sustained visual focus, leading to cognitive
fatigue, while EMG-based control induces muscular fatigue over time. Our system
dynamically alternates between EEG and EMG inputs, using EEG to detect SSVEP
signals at 9.75 Hz and 14.25 Hz and EMG from cheek and neck muscles to optimize
control based on task demands. In a virtual turtle navigation task, the hybrid
system achieved task completion times comparable to an EMG-only approach, while
90% of users reported reduced or equal physical demand. These findings
demonstrate that multimodal BMI systems can enhance usability, reduce strain,
and improve long-term adherence in assistive technologies.
Daniel Wang
Katie Hong
Zachary Sayyah
Malcolm Krolick
Emma Steinberg
Rohan Venkatdas
Sidharth Pavuluri
Yipeng Wang
Zihan Huang
08/25/2009--
11/29/2006
P is not equal to NP
This submission has been withdrawn at the request of the author.
Raju Renjit. G
08/25/2009--
02/21/2007
Ulam's Conjecture is True for Connected Graphs
This submission has been withdrawn at the request of the author.
Raju Renjit. G
|
|