if ($query->have_posts()) :
    while ($query->have_posts()) : $query->the_post();
        // Your loop code here, e.g.:
        the_title('<h2>', '</h2>');
        the_content();
    endwhile;

    // Add pagination
    the_posts_pagination(array(
        'prev_text' => __('Previous'),
        'next_text' => __('Next'),
    ));
else :
    echo 'No publications found.';
endif;

// Reset post data after custom query
wp_reset_postdata();